Product Manual
SV35 Series SATA
ST3500641SV
ST3250824SV
ST3160812SV
100415208
Rev. B
August 2007
Contents
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specification summaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Breather filter hole precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
S.M.A.R.T. commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Streaming feature set support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.0
Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
SV35 Series SATA Product Manual, Rev. B
i
ii
SV35 Series SATA Product Manual, Rev. B
List of Figures
Figure 6.
Typical 5V startup and operation current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Typical 12V startup and operation current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Breather filter hole location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Serial ATA jumper block and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
SV35 Series SATA Product Manual, Rev. B
iii
1.0
Introduction
This manual describes the functional, mechanical and interface specifications for the following Seagate
SV35 Series SATA model drives:
• ST3500641SV
• ST3250824SV
• ST3160812SV
These drives provide the following key features:
• Specifically designed for surveilance DVRs.
• Optimized power for surveillance systems--spinup limited to a maximum to 2.0 amps.
• Seek profile optimized for surveillance performance and power consumption.
• 7,200 RPM spindle speed.
• 16 Mbyte buffer: ST3500641SV.
• 8 Mbyte buffer: ST3250824SV and ST3160812SV
• High instantaneous (burst) data-transfer rates (up to 300 Mbytes per second).
• Tunneling Magnetoresistive (TMR) recording heads.
• Native Command Queueing with command ordering to increase performance in demanding applications.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Full-track multiple-sector transfer capability without local processor intervention.
• 350 Gs nonoperating shock.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Support for Read Multiple and Write Multiple commands.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• Supports latching SATA cables and connectors.
• The 3D Defense System™, which includes Drive Defense, Data Defense, and Diagnostic Defense, offers
the industry’s most comprehensive protection for disc drives.
SV35 Series SATA Product Manual, Rev. B
1
1.1
About the Serial ATA interface
The Serial ATA interface provides several advantages over the traditional (parallel) ATA interface. The primary
advantages include:
• Easy installation and configuration with true plug-and-play connectivity. It is not necessary to set any jump-
ers or other configuration options.
• Thinner and more flexible cabling for improved enclosure airflow and ease of installation.
• Scalability to higher performance levels.
In addition, Serial ATA makes the transition from parallel ATA easy by providing legacy software support. Serial
ATA was designed to allow you to install a Serial ATA host adapter and Serial ATA disc drive in your current
system and expect all of your existing applications to work as normal.
The Serial ATA interface connects each disc drive in a point-to-point configuration with the Serial ATA host
adapter. There is no master/slave relationship with Serial ATA devices like there is with parallel ATA. If two
drives are attached on one Serial ATA host adapter, the host operating system views the two devices as if they
were both “masters” on two separate ports. This essentially means both drives behave as if they are Device 0
(master) devices.
Note. The host adapter may, optionally, emulate a master/slave environment to host software where two
devices on separate Serial ATA ports are represented to host software as a Device 0 (master) and
Device 1 (slave) accessed at the same set of host bus addresses. A host adapter that emulates a
master/slave environment manages two sets of shadow registers. This is not a typical Serial ATA
environment.
The Serial ATA host adapter and drive share the function of emulating parallel ATA device behavior to provide
backward compatibility with existing host systems and software. The Command and Control Block registers,
PIO and DMA data transfers, resets, and interrupts are all emulated.
The Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device regis-
ters, referred to as the Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For addi-
tional information about how Serial ATA emulates parallel ATA, refer to the “Serial ATA: High Speed Serialized
2
SV35 Series SATA Product Manual, Rev. B
2.0
Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the
following models:
ST3500641SV
ST3250824SV
ST3160812SV
2.1
Specification summaries
The specifications listed in tables 1 and 2 are for quick reference. For details on specification measurement or
definition, see the appropriate section of this manual.
SV35 Series SATA Product Manual, Rev. B
3
Table 1:
Drive specifications for 500 Gbyte models
Drive specification
ST3500641SV
Formatted Gbytes (512 bytes/sector)*
Guaranteed sectors
500
976,773,168
512
Bytes per sector
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
790.1
124.5
97.96
7,200
815.2
65
Recording density in BPI (kbits/inch max)
Track density TPI (ktracks/inch avg)
2
Areal density (Gbits/inch avg)
Spindle speed (RPM)
Internal data transfer rate (Mbits/sec max)
Sustained transfer rate (Mbytes/sec max)
I/O data transfer rate (Mbytes/sec max)
ATA data-transfer modes supported
300
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
SATA data-transfer modes supported
3.0 Gbits/sec
1.5 Gbits/sec
Cache buffer
8 Mbytes
Height (max)
26.1 mm (1.028 inches)
Width (max)
101.6 mm (4.000 inches) +/-0.010 inches
Length (max)
146.99 mm (5.787 inches)
710 grams
Weight (max) grams
Average latency (msec)
Power-on to ready (max)
Standby to ready (max)
Track-to-track seek time (msec typical)
Average seek (msec typical)
Startup current (typical) 12V (peak)
Seek power (typical)
DVR Operating (typical)
Idle mode (typical)
4.16
16 sec
16 sec
<0.8 (read), <1.0 (write)
18 (read), 20 (write)
2.0 amps
8.6 watts
8.45 watts
8.00 watts
Standby mode (typical)
Sleep mode (typical)
0.80 watts
0.80 watts
Voltage tolerance
(including noise)
5V ± 5%
12V ± 10%
Ambient temperature
0° to 60°C (operating)
–40° to 70°C (nonoperating)
Temperature gradient
(°C per hour max)
20°C (operating)
30°C (nonoperating)
Relative humidity
5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient
30% per hour max
Wet bulb temperature
(°C max)
37.7 (operating)
40.0 (nonoperating)
Altitude, operating
–60.96 m to 3,048 m
(–200 ft to 10,000+ ft)
4
SV35 Series SATA Product Manual, Rev. B
Table 1:
Drive specifications for 500 Gbyte models
Drive specification
ST3500641SV
Altitude, nonoperating
(meters below mean sea level, max)
–60.96 m to 12,192 m
(–200 ft to 40,000+ ft)
Shock, operating (max at 2 msec)
Shock, nonoperating (max at 2 msec)
Vibration, operating
63 Gs
300 Gs
5-22 Hz: +/-0.25”, Displacement limited
22-350 Hz: 0.5 Gs
350-500 Hz: 0.25 Gs
Vibration, nonoperating
5-22 Hz: +/-0.25”, Displacement limited
23-350 Hz: 5.0 Gs
351-500 Hz: 1.0 Gs
Drive acoustics, sound power
Idle** (bels)
2.79 (typical)
2.96 (max)
Operational, DVR seeks (bels)
2.71 (typical)
2.88 (max)
14
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Warranty
1 per 10 bits read
<1%
5 years on distribution units.
To determine the warranty for a specific drive, use a web
browser to access the following web page:
From this page, click on the “Verify Your Warranty” link. You will
be asked to provide the drive serial number, model number (or
part number) and country of purchase. The system will display
the warranty information for your drive.
Contact start-stop cycles
50,000
(25°C, 50% relative humidity)
Supports Hotplug operation per SATA II
specification
Yes
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels..
SV35 Series SATA Product Manual, Rev. B
5
Table 2:
Drive specifications for 250 Gbyte models
Drive specification
ST3250824SV
Formatted Gbytes (512 bytes/sector)*
Guaranteed sectors
250
488,397,168
512
Bytes per sector
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
790.1
124.5
97.69
7,200
867.2
76.6
Recording density in BPI (kbits/inch max)
Track density TPI (ktracks/inch avg)
2
Areal density (Gbits/inch avg)
Spindle speed (RPM)
Internal data transfer rate (Mbits/sec max)
Sustained transfer rate (Mbytes/sec max)
I/O data transfer rate (Mbytes/sec max)
ATA data-transfer modes supported
300
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
SATA data-transfer modes supported
3.0 Gbits/sec
1.5 Gbits/sec
Cache buffer
8 Mbytes
Height (max)
26.1 mm (1.028 inches)
101.6 mm (4.000 inches) +/-0.010 inches
146.99 mm (5.787 inches)
580 grams (1.28 lb.)
4.16
Width (max)
Length (max)
Weight (max) grams
Average latency (msec)
Power-on to ready (typical)
Standby to ready (typical)
Track-to-track seek time (msec typical)
Average seek (msec typical)
Startup current (typical) 12V (peak)
Seek power (typical)
DVR Operating (typical)
Idle mode (typical)
16 sec
16 sec
<0.8 (read), <1.0 (write)
18 (read), 20 (write)
2.0 amps
8.6 watts
6.49 watts
8.00 watts
Standby mode (typical)
Sleep mode (typical)
0.80 watts
0.80 watts
Voltage tolerance
(including noise)
5V ± 5%
12V ± 10%
Ambient temperature
0° to 60°C (operating)
–40° to 70°C (nonoperating)
Temperature gradient
(°C per hour max)
20°C (operating)
30°C (nonoperating)
Relative humidity
5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient
30% per hour max
Wet bulb temperature
(°C max)
37.7 (operating)
40 (nonoperating)
Altitude, operating
–60.96 m to 3,048 m
(–200 ft to 10,000+ ft)
6
SV35 Series SATA Product Manual, Rev. B
Table 2:
Drive specifications for 250 Gbyte models
Drive specification
ST3250824SV
Altitude, nonoperating
(meters below mean sea level, max)
–60.96 m to 12,192 m
(–200 ft to 40,000+ ft)
Shock, operating (max at 2 msec)
Shock, nonoperating (max at 2 msec)
Vibration, operating
63 Gs
350 Gs
5-22 Hz: +/-0.25”, Displacement limited
22-350 Hz: 0.5 Gs
350-500 Hz: 0.25 Gs
Vibration, nonoperating
5-22 Hz: +/-0.25”, Displacement limited
22-350 Hz: 5.0 Gs
350-500 Hz: 1.0 Gs
Drive acoustics, sound power (bels)
Idle** (bels)
2.67 (typical)
2.82 (max)
Operational, DVR seeks (bels)
2.8 (typical
2.9 (max)
14
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Warranty
1 per 10 bits read
<1%
5 years on distribution units.
To determine the warranty for a specific drive, use a web browser to access
the following web page:
From this page, click on the “Verify Your Warranty” link. You will be asked to
provide the drive serial number, model number (or part number) and coun-
try of purchase. The system will display the warranty information for your
drive.
Contact start-stop cycles
50,000
(25°C, 50% relative humidity)
Supports Hotplug operation per SATA II specification
Yes
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels.
SV35 Series SATA Product Manual, Rev. B
7
Table 3:
Drive specifications for 160 Gbyte models
Drive specification
ST3160212SCE
Formatted Gbytes (512 bytes/sector)*
Guaranteed sectors
160
312,581,808
512
Bytes per sector
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
840.0
141.5
119.0
7,200
867.2
83.0
Recording density in BPI (kbits/inch max)
Track density TPI (ktracks/inch avg)
2
Areal density (Gbits/inch avg)
Spindle speed (RPM)
Internal data transfer rate (Mbits/sec max)
Sustained transfer rate (Mbytes/sec max)
I/O data transfer rate (Mbytes/sec max)
ATA data-transfer modes supported
300
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
SATA data-transfer modes supported
1.5 Gbits/sec
3.0 Gbits/sec
Cache buffer
2 Mbytes
Height (max)
26.1 mm (1.028 inches)
101.6 mm (4.000 inches) +/-0.010 inches
146.99 mm (5.787 inches)
580 grams (1.28 lb.)
4.16
Width (max)
Length (max)
Weight (typical)
Average latency (msec)
Power-on to ready (typical)
Standby to ready (typical)
Track-to-track seek time (msec typical)
Average seek (msec typical)
Startup current (typical) 12V (peak)
Seek power (typical)
DVR Operating (typical)
Idle mode (typical)
16 secs
16 secs
<0.8 (read), <1.0 (write)
18 (read), 20 (write)
2.0 amps
8.6 watts
5.71 watts
8.00 watts
Standby mode (typical)
Sleep mode (typical)
0.80 watts
0.80 watts
Voltage tolerance
(including noise)
5V ± 5%
12V ± 10%
Ambient temperature
0° to 60°C (operating)
–40° to 70°C (nonoperating)
Temperature gradient
(°C per hour max)
20°C (operating)
30°C (nonoperating)
Relative humidity
5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient
30% per hour max
Wet bulb temperature
(°C max)
37.7 (operating)
40 (nonoperating)
Altitude, operating
–60.96 m to 3,048 m
(–200 ft to 10,000+ ft)
8
SV35 Series SATA Product Manual, Rev. B
Table 3:
Drive specifications for 160 Gbyte models
Drive specification
ST3160212SCE
Altitude, nonoperating
(meters below mean sea level, max)
–60.96 m to 12,192 m
(–200 ft to 40,000+ ft)
Shock, operating (max at 2 msec)
Shock, nonoperating (max at 2 msec)
Vibration, operating
63 Gs
350 Gs
5-22 Hz: 0.25 Gs, Limited displacement
22-350 Hz: 0.5 Gs
350-500 Hz: 0.25 Gs
Vibration, nonoperating
5-22 Hz: 0.25 Gs, Limited displacement
23-350 Hz: 5.0 Gs
351-500 Hz: 1.0 Gs
Drive acoustics, sound power (bels)
Idle** (bels)
2.48 (typical)
2.64 (max)
Operational, DVR seeks (bels)
2.53 (typical)
2.62 (max)
14
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Warranty
1 per 10 bits read
<1%
5 years on distribution units.
To determine the warranty for a specific drive, use a web browser to
access the following web page:
From this page, click on the “Verify Your Warranty” link. You will be
asked to provide the drive serial number, model number (or part num-
ber) and country of purchase. The system will display the warranty infor-
mation for your drive.
Contact start-stop cycles
50,000
(25°C, 50% relative humidity)
Supports Hotplug operation per SATA II
specification
Yes
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels.
SV35 Series SATA Product Manual, Rev. B
9
2.2
Formatted capacity
Model
Formatted capacity*
Guaranteed sectors
976,773,168
Bytes per sector
ST3500641SV
ST3250824SV
ST3160812SV
500 Gbytes
250 Gbytes
160 Gbytes
512
512
512
488,397,168
312,581,808
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
2.2.1
LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,
where n is the number of guaranteed sectors as defined above.
See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-
bit addressing support of drives with capacities over 137 Gbytes.
2.3
Default logical geometry
Cylinders
Read/write heads
Sectors per track
63
16,383
16
LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,
where n is the number of guaranteed sectors as defined above.
10
SV35 Series SATA Product Manual, Rev. B
2.4
Recording and interface technology
Interface
ATA
Recording method
16/17 EPRML
Recording density KBPI (kbits/inch max)
ST3500641SV and ST3250824SV
ST3160812SV
790.1
840.0
Track density KTPI (ktracks/inch max)
ST3500641SV and ST3250824SV
ST3160812SV
124.5
141.5
2
Areal density (Gbits/inch max)
ST3500641SV and ST3250824SV
ST3160812SV
97.69
119.0
7,200
Spindle speed (RPM) (± 0.2%)
Internal data-transfer rate (Mbits/sec max)
ST3500641SV and ST3250824SV
ST3160812SV
815.2
867.2
Sustained data transfer rate (Mbytes/sec max)
ST3500641SV
65.0
76.6
83.0
300
ST3250824SV
ST3160812SV
I/O data-transfer rate (Mbytes/sec max)
Cache buffer
ST3500641SV
16 Mbytes (16,385 kbytes)
8 Mbytes (8,192 kbytes)
ST3250824SV and ST3160812SV
SV35 Series SATA Product Manual, Rev. B
11
2.5
Physical characteristics
Drive specification
Maximum height
(mm)
26.1
1.028
(inches)
Maximum width
(mm)
101.6
4.000 +/- 0.010
(inches)
Maximum length
(mm)
146.99
5.787
(inches)
Maximum weight
ST3500641SV
710 grams (1.57 lbs)
580 grams (1.28 lbs)
ST3250824SV
ST3160812SV
2.6
Seek time
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using
drive diagnostics. The specifications in the table below are defined as follows:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between
random tracks, less overhead.
Typical seek times (msec)
Track-to-track
Read
0.8
Write
1.0
Average
18
20
Average latency:
4.16
4.16
Note. These drives are designed to consistently meet the seek times represented in this manual. Physical
seeks, regardless of mode (such as track-to-track and average), are expected to meet or exceed
the noted values. However, due to the manner in which these drives are formatted, benchmark
tests that include command overhead or measure logical seeks may produce results that vary from
these specifications.
12
SV35 Series SATA Product Manual, Rev. B
2.7
Start/stop times
Power-on to Ready (sec)
16
Standby to Ready (sec)
16 (max)
10 (max)
Ready to spindle stop (sec)
2.8
Power specifications
The drive receives DC power (+5V and +12V) through a native SATA power connector. See Figure 5 on
2.8.1
Power consumption
Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on
an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient
temperature.
• Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating
speed.
• Seek mode
During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and
does not execute a read or write operation. Servo electronics are active. Seek mode power represents the
worst-case power consumption, using only random seeks with read or write latency time. This mode is not
typical and is provided for worst-case information.
• Operating power and current
Operating power is measured using a standard Surveillance Storage Profile.
• Idle mode power
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in
a random track location.
• Standby mode
During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/
write electronics are in power-down mode.
SV35 Series SATA Product Manual, Rev. B
13
Table 4:
DC power requirements
Power dissipation (typical)
Example: ST3500641SV
Average (watts, 25° C)
5V typ amps
—
12V typ amps
2.0 (peak)
0.519
Spinup
—
Idle
6.9
0.353
Operating (DVR Storage Profile)
8.44
12.60
0.80
0.80
0.478
0.50
Seeking
Standby
Sleep
0.613
0.795
0.106
0.023
0.106
0.023
2.8.1.1
Typical current profiles
Figure 1
Typical 5V startup and operation current profile
Figure 2
Typical 12V startup and operation current profile
14
SV35 Series SATA Product Manual, Rev. B
2.8.2
Conducted noise
Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on
the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.
• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
• Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.
2.8.3
Voltage tolerance
Voltage tolerance (including noise):
5V ± 5%
12V ± 10%
2.8.4
Power-management modes
The drive provides programmable power management to provide greater energy efficiency. In most systems,
you can control power management through the system setup program. The drive features the following
power-management modes:
Power modes
Active
Heads
Spindle
Rotating
Rotating
Stopped
Stopped
Buffer
Tracking
Tracking
Parked
Parked
Enabled
Enabled
Enabled
Disabled
Idle
Standby
Sleep
• Active mode
The drive is in Active mode during the read/write and seek operations.
• Idle mode
The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc
access is necessary.
• Standby mode
The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set
the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for
a specifiable length of time. The standby timer delay is established using a Standby or Idle command. In
Standby mode, the drive buffer is enabled, the heads are parked and the spindle is at rest. The drive
accepts all commands and returns to Active mode any time disc access is necessary.
• Sleep mode
The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive
buffer is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it
receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and
enters Standby mode with all current translation parameters intact.
• Idle and Standby timers
SV35 Series SATA Product Manual, Rev. B
15
Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and
begins counting down from its specified delay times to zero. If the standby timer reaches zero before any
drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the
drive accepts all commands and returns to Active mode when disc access is necessary.
2.9
Environmental specifications
Ambient temperature
2.9.1
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed 69°C (156°F) within the operating ambient conditions. Rec-
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 44°C (112°F) at 10,000 feet
(3,048 meters).
Operating:
0° to 60°C (32° to 140°F)
Nonoperating:
–40° to 70°C (–40° to 158°F)
2.9.2
Temperature gradient
Operating:
20°C per hour (68°F per hour max), without condensation
30°C per hour (86°F per hour max)
Nonoperating:
2.9.3
2.9.3.1
Humidity
Relative humidity
Operating:
Nonoperating:
5% to 90% noncondensing (30% per hour max)
5% to 95% noncondensing (30% per hour max)
2.9.3.2
Wet bulb temperature
Operating:
37.7°C (99.9°F max)
40°C (104°F max)
Nonoperating:
2.9.4
Altitude
Operating:
–60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
Nonoperating:
16
SV35 Series SATA Product Manual, Rev. B
2.9.5
Shock
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive
mounting screws. Shock may be applied in the X, Y or Z axis.
2.9.5.1
Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum
operating shock of 63 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more
than two times per second.
2.9.5.2
Nonoperating shock
The nonoperating shock level that the drive can experience without incurring physical damage or degradation
in performance when subsequently put into operation is 300 Gs for 500 GB drives and 350 Gs for 250 and 160
GB drives, based on a nonrepetitive half-sine shock pulse of 2 msec duration.
2.9.6
Vibration
All vibration specifications assume that the drive is mounted securely with the input vibration applied at the
drive mounting screws. Vibration may be applied in the X, Y or Z axis.
2.9.6.1
Operating vibration
The maximum vibration levels that the drive may experience while meeting the performance standards speci-
fied in this document are specified below.
5–22 Hz
+/-0.25”, Displacement limited
22–350 Hz
350–500 Hz
0.50 Gs
0.25 Gs
2.9.6.2
Nonoperating vibration
The following table lists the maximum nonoperating vibration that the drive may experience without incurring
physical damage or degradation in performance when subsequently put into operation.
5–22 Hz
0.25 G (Limited displacement)
22–350 Hz
350–500 Hz
5.0 Gs
1.0 Gs
SV35 Series SATA Product Manual, Rev. B
17
2.10
Acoustics
Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea-
surements are consistent with ISO document 7779. Sound power measurements are taken under essentially
free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.
Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is
defined by the following equation:
(Number of seeks per second = 0.4 / (average latency + average access time)
Drive acoustics, sound power
Idle
Operational, DVR (Digital Video Recorder) seeks
2.46 bels (typ)
2.65 bels (max)
2.8 bels (typ)
2.9 bels (max)
2.11
Electromagnetic immunity
When properly installed in a representative host system, the drive operates without errors or degradation in
performance when subjected to the radio frequency (RF) environments defined in the following table:
Table 5:
Radio frequency environments
Performance
level
Reference
standard
Test
Description
Electrostatic discharge
Radiated RF immunity
Contact, HCP, VCP: ± 4 kV; Air:
± 8 kV
B
A
EN 61000-4-2: 95
80 to 1,000 MHz, 3 V/m,
80% AM with 1 kHz sine
900 MHz, 3 V/m, 50% pulse
modulation @ 200 Hz
EN 61000-4-3: 96
ENV 50204: 95
Electrical fast transient
Surge immunity
± 1 kV on AC mains, ± 0.5 kV on
external I/O
B
B
A
EN 61000-4-4: 95
EN 61000-4-5: 95
EN 61000-4-6: 97
EN 61000-4-11: 94
± 1 kV differential, ± 2 kV com-
mon, AC mains
Conducted RF immunity
Voltage dips, interrupts
150 kHz to 80 MHz, 3 Vrms,
80% AM with 1 kHz sine
0% open, 5 seconds
0% short, 5 seconds
40%, 0.10 seconds
70%, 0.01 seconds
C
C
C
B
18
SV35 Series SATA Product Manual, Rev. B
2.12
Reliability
14
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Contact start-stop cycles
1 per 10 bits read, max
<1% (nominal power, 8760 power on hours, 25°C ambient temperature)
50,000 cycles
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)
Preventive maintenance
None required
2.13
Agency certification
2.13.1
Safety certification
The drives are recognized in accordance with UL 1950 and CSA C22.2 (950) and meet all applicable sections
of IEC950 and EN 60950 as tested by TUV North America.
2.13.2
Electromagnetic compatibility
Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Elec-
tromagnetic Compatibility Directive (89/336/EEC). Testing is performed to the levels specified by the product
standards for Information Technology Equipment (ITE). Emission levels are defined by EN 55022, Class B and
the immunity levels are defined by EN 55024.
Seagate uses an independent laboratory to confirm compliance with the EC directives specified in the previous
paragraph. Drives are tested in representative end-user systems. Although CE-marked Seagate drives comply
with the directives when used in the test systems, we cannot guarantee that all systems will comply with the
directives. The drive is designed for operation inside a properly designed enclosure, with properly shielded I/O
cable (if necessary) and terminators on all unused I/O ports. Computer manufacturers and system integrators
should confirm EMC compliance and provide CE marking for their products.
Korean RRL
If these drives have the Korea Ministry of Information and Communication (MIC) logo, they comply with para-
graph 1 of Article 11 of the Electromagnetic Compatibility control Regulation and meet the Electromagnetic
Compatibility (EMC) Framework requirements of the Radio Research Laboratory (RRL) Ministry of Information
and Communication Republic of Korea.
These drives have been tested and comply with the Electromagnetic Interference/Electromagnetic Susceptibil-
ity (EMI/EMS) for Class B products. Drives are tested in a representative, end-user system by a Korean-recog-
nized lab.
• EUT name (model numbers): ST3500641SV, ST3250824SV, and ST3160812SV.
• Certificate numbers: E-H011-05-3453 (B)
• Trade name or applicant: Seagate Technology
• Manufacturing date: March 2006
• Manufacturer/nationality: Singapore and China
SV35 Series SATA Product Manual, Rev. B
19
Australian C-Tick (N176)
If these models have the C-Tick marking, they comply with the Australia/New Zealand Standard AS/NZS3548
1995 and meet the Electromagnetic Compatibility (EMC) Framework requirements of the Australian Communi-
cation Authority (ACA).
2.13.3
FCC verification
These drives are intended to be contained solely within a personal computer or similar enclosure (not attached
as an external device). As such, each drive is considered to be a subassembly even when it is individually mar-
keted to the customer. As a subassembly, no Federal Communications Commission verification or certification
of the device is required.
Seagate Technology LLC has tested this device in enclosures as described above to ensure that the total
assembly (enclosure, disc drive, motherboard, power supply, etc.) does comply with the limits for a Class B
computing device, pursuant to Subpart J, Part 15 of the FCC rules. Operation with noncertified assemblies is
likely to result in interference to radio and television reception.
Radio and television interference. This equipment generates and uses radio frequency energy and if not
installed and used in strict accordance with the manufacturer’s instructions, may cause interference to radio
and television reception.
This equipment is designed to provide reasonable protection against such interference in a residential installa-
tion. However, there is no guarantee that interference will not occur in a particular installation. If this equipment
does cause interference to radio or television, which can be determined by turning the equipment on and off,
you are encouraged to try one or more of the following corrective measures:
• Reorient the receiving antenna.
• Move the device to one side or the other of the radio or TV.
• Move the device farther away from the radio or TV.
• Plug the computer into a different outlet so that the receiver and computer are on different branch outlets.
If necessary, you should consult your dealer or an experienced radio/television technician for additional sug-
gestions. You may find helpful the following booklet prepared by the Federal Communications Commission:
How to Identify and Resolve Radio-Television Interference Problems. This booklet is available from the Super-
intendent of Documents, U.S. Government Printing Office, Washington, DC 20402. Refer to publication num-
ber 004-000-00345-4.
20
SV35 Series SATA Product Manual, Rev. B
2.14
Environmental protection
Seagate designs its products to meet environmental protection requirements worldwide, including regulations
restricting certain chemical substances.
2.14.1
European Union Restriction of Hazardous Substances (RoHS)
The European Union Restriction of Hazardous Substances (RoHS) Directive restricts the presence of chemical
substances, including Lead (Pb), in electronic products effective July 2006.
A number of parts and materials in Seagate products are procured from external suppliers. We rely on the
rep-resentations of our suppliers regarding the presence of RoHS substances in these parts and materials. Our
supplier contracts require compliance with our chemical substance restrictions, and our suppliers document
their compliance with our requirements by providing material content declarations for all parts and materials for
the disc drives documented in this publication. Current supplier declarations include disclosure of the inclusion
of any RoHS-regulated substance in such parts or materials.
Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws
and regulations which restrict chemical content in electronic products. These systems include standard
operat-ing procedures that ensure that restricted substances are not utilized in our manufacturing operations,
labora-tory analytical validation testing, and an internal auditing process to ensure that all standard operating
procedures are complied with.
2.15
Corrosive environment
Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to
light industrial environments containing sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM
B845. However, this accelerated testing cannot duplicate every potential application environment.
Users should use caution exposing any electronic components to uncontrolled chemical pollutants and corro-
sive chemicals as electronic drive component reliability can be affected by the installation environment. The sil-
ver, copper, nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide,
chloride, and nitrate contaminants. Sulfur is found to be the most damaging. In addition, electronic components
should never be exposed to condensing water on the surface of the printed circuit board assembly (PCBA) or
exposed to an ambient relative humidity greater than 95%. Materials used in cabinet fabrication, such as vulca-
nized rubber, that can outgas corrosive compounds should be minimized or eliminated. The useful life of any
electronic equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.
SV35 Series SATA Product Manual, Rev. B
21
22
SV35 Series SATA Product Manual, Rev. B
3.0
Configuring and mounting the drive
This section contains the specifications and instructions for configuring and mounting the drive.
3.1
Handling and static-discharge precautions
After unpacking, and before installation, the drive may be exposed to potential handling and electrostatic dis-
charge (ESD) hazards. Observe the following standard handling and static-discharge precautions:
Caution:
• Keep the drive in the electrostatic discharge (ESG) bag until you are ready for installation.
• Before handling the drive, put on a grounded wrist strap, or ground yourself frequently by touching the metal
chassis of a computer that is plugged into a grounded outlet. Wear a grounded wrist strap throughout the entire
installation procedure.
• Handle the drive by its edges or frame only.
• The drive is extremely fragile—handle it with care. Do not press down on the drive top cover.
• Always rest the drive on a padded, antistatic surface until you mount it in the computer.
• Do not touch the connector pins or the printed circuit board.
• Do not remove the factory-installed labels from the drive or cover them with additional labels. Removal voids
the warranty. Some factory-installed labels contain information needed to service the drive. Other labels are
used to seal out dirt and contamination.
SV35 Series SATA Product Manual, Rev. B
23
3.2
Breather filter hole precautions
This section contains information regarding the precautions to take with the breather filter hole in Seagate hard
disc drives. Take the proper precautions to ensure full functionality and to prevent possible damage to the
drive.
Breather hole
Do not cover or seal
this hole.
Figure 3
Breather filter hole location
Caution: Do not cover, seal, or insert any object into this hole.
This hole has two purposes:
• To allow condensation inside the hard disc to escape
• To allow air pressure inside the hard disc to equalize with ambient pressure
Note. If this hole is covered, sealed, or penetrated by any object, drive reliability may be compromised
and could lead to permanent damage--doing so voids the warranty.
24
SV35 Series SATA Product Manual, Rev. B
3.3
Configuring the drive
Each drive on the Serial ATA interface connects in a point-to-point configuration with the Serial ATA host
adapter. There is no master/slave relationship because each drive is considered a master in a point-to-point
relationships. If two drives are attached on one Serial ATA host adapter, the host operating system views the
two devices as if they were both “masters” on two separate ports. This means both drives behave as if they are
Device 0 (master) devices.
Serial ATA drives are designed for easy installation. It is usually not necessary to set any jumpers on the drive
for proper operation; however, if you connect the drive and receive a “drive not detected” error, your SATA-
equipped motherboard or host adapter may use a chipset that does not support SATA speed autonegotiation. If
you have a motherboard or host adapter that does not support autonegotiation:
• Configure the jumper block with a jumper as shown in Figure 4 below to limit the data transfer rate to 1.5 Gbits
per second (and leave the drive connected to the SATA-equipped motherboard or host adapter that doesn’t
support autonegotiation) or
• Install a SATA host adapter that supports autonegotiation, set the drive jumper block set to “3 Gbits per second
operation” (see Figure 4 below), and connect the drive to that adapter. This option has the benefit of not limiting
the drive to a 1.5 Gbits/sec transfer rate.
3.0 Gbits per second operation
Limit data transfer rate to
1.5 Gbits per second
Jumper block
SATA power connector
SATA interface connector
Figure 4
Serial ATA jumper block and connectors
3.4
Serial ATA cables and connectors
The Serial ATA interface cable consists of four conductors in two differential pairs, plus three ground connec-
tions. The cable size may be 30 to 26 AWG with a maximum length of one meter (39.37 inches). See Table 6
for connector pin definitions. Either end of the SATA signal cable can be attached to the drive or host.
For direct backplane connection, the drive connectors are inserted directly into the host receptacle. The drive
and the host receptacle incorporate features that enable the direct connection to be hot pluggable and blind
mateable.
Signal connector
Power connector
Signal cable
Power cable
Figure 5
Attaching SATA cabling
Each cable is keyed to ensure correct orientation. SV35 Series SATA drives support latching SATA connectors.
SV35 Series SATA Product Manual, Rev. B
25
3.5
Drive mounting
You can mount the drive in any orientation using four screws in the side-mounting holes or four screws in the
bottom-mounting holes. See Figure 6 on page 26 for drive mounting dimensions. Follow these important
mounting precautions when mounting the drive:
• Allow a minimum clearance of 0.030 inches (0.76 mm) around the entire perimeter of the drive for cooling.
• Use only 6-32 UNC mounting screws.
• The screws should be inserted no more than 0.150 inch (3.81 mm) into the bottom or side mounting holes.
• Do not overtighten the mounting screws (maximum torque: 6 inch-lb).
Recommended
case temperature
measurement location
[1]
5.787 (146.9898) max.
.250 + .015
(6.35 + .381)
(3x both sides)
1.638
(41.605)
1.122
+ .020
(28.499
+ .508)
[1]
[1]
4.000
(101.6)
[1]
4.000
(101.6)
1.028 max
(26.111 max)
[1]
.138
(3.505)
.814
(20.676)
C of conn. Datum B
L
2.00
Notes:
(50.80)
Dimensions are shown in inches (mm).
[1] Dimensions per SFF-8301 specification
C of drive
L
[1]
2 x 3.750
(2 x 95.25)
2 x 1.625
(2 x 41.28)
[1]
[1]
2 x 1.750
(2 x 44.45)
4.000
(101.6)
[1]
Recommended
case temperature
measurement location
Figure 6
Mounting dimensions—top, side and end view
26
SV35 Series SATA Product Manual, Rev. B
4.0
Serial ATA (SATA) interface
These drives use the industry-standard Serial ATA interface that supports FIS data transfers. It supports ATA
programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–6.
For detailed information about the Serial ATA interface, refer to the “Serial ATA: High Speed Serialized AT
Attachment” specification.
4.1
Hot-Plug compatibility
SV35 Series SATA drives incorporate connectors which enable you to hot plug these drives in accordance with
the Serial ATA II: Extension to Serial ATA 1.0a specification. This specification can be downloaded from
SV35 Series SATA Product Manual, Rev. B
27
4.2
Serial ATA device plug connector pin definitions
Table 6: Serial ATA connector pin definitions
Segment Pin
Function
Ground
A+
Definition
S1
S2
S3
S4
S5
S6
2nd mate
Differential signal pair A from Phy
A-
Ground
B-
2nd mate
Differential signal pair B from Phy
B+
Signal
S7
Ground
2nd mate
Key and spacing separate signal and power segments
P1
V33
3.3V power
P2
V33
3.3V power
P3
V33
3.3V power, pre-charge, 2nd mate
1st mate
P4
Ground
Ground
Ground
V5
P5
2nd mate
P6
2nd mate
P7
5V power, pre-charge, 2nd mate
5V power
Power
P8
V5
P9
V5
5V power
P10
P11
P12
P13
P14
P15
Ground
2nd mate
Ground or LED signal If grounded, drive does not use deferred spin
Ground
V12
1st mate.
12V power, pre-charge, 2nd mate
12V power
V12
V12
12V power
Notes:
1. All pins are in a single row, with a 1.27 mm (0.050”) pitch.
2. The comments on the mating sequence apply to the case of backplane blindmate connector only. In this
28
SV35 Series SATA Product Manual, Rev. B
case, the mating sequences are:
• the ground pins P4 and P12.
• the pre-charge power pins and the other ground pins.
• the signal pins and the rest of the power pins.
3. There are three power pins for each voltage. One pin from each voltage is used for pre-charge when
installed in a blind-mate backplane configuration.
4. All used voltage pins (Vx) must be terminated.
SV35 Series SATA Product Manual, Rev. B
29
4.3
Supported ATA commands
The following table lists Serial ATA standard commands that the drive supports. For a detailed description of
Table 7:
Supported ATA commands
Command name
Command code (in hex)
98 or E5
Check Power Mode
Device Configuration Freeze Lock
Device Configuration Identify
Device Configuration Restore
Device Configuration Set
Device Reset
H
H
B1 / C1
H
H
B1 / C2
H
H
H
H
B1 / C0
H
B1 / C3
H
08
92
90
H
H
H
Download Microcode
Execute Device Diagnostics
Flush Cache
E7
H
Flush Cache Extended
Format Track
EA
H
50
H
Identify Device
EC
H
Idle
97 or E3
H
H
Idle Immediate
95 or E1
H
H
Initialize Device Parameters
Read Buffer
91
H
E4
H
Read DMA
C8
H
Read DMA Extended
Read DMA Without Retries
Read Log Ext
25
H
C9
H
H
2F
Read Multiple
C4
H
Read Multiple Extended
Read Native Max Address
Read Native Max Address Extended
29
H
F8
H
H
27
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SV35 Series SATA Product Manual, Rev. B
Command name
Command code (in hex)
Read Sectors
20
24
21
40
42
41
10
H
H
H
H
H
H
H
Read Sectors Extended
Read Sectors Without Retries
Read Verify Sectors
Read Verify Sectors Extended
Read Verify Sectors Without Retries
Recalibrate
Security Disable Password
Security Erase Prepare
Security Erase Unit
Security Freeze
F6
F3
F4
F5
F1
F2
H
H
H
H
H
H
H
Security Set Password
Security Unlock
Seek
70
EF
Set Features
H
H
Set Max Address
F9
Note: Individual Set Max Address
commands are identified by the value
placed in the Set Max Features regis-
ter as defined to the right.
Address:
Password:
Lock:
Unlock:
Freeze Lock:
00
01
02
03
04
H
H
H
H
H
Set Max Address Extended
Set Multiple Mode
37
H
C6
H
Sleep
99 or E6
H
H
S.M.A.R.T. Disable Operations
S.M.A.R.T. Enable/Disable Autosave
S.M.A.R.T. Enable Operations
S.M.A.R.T. Execute Offline
S.M.A.R.T. Read Attribute Thresholds
S.M.A.R.T. Read Data
B0 / D9
H
H
B0 / D2
H
H
H
H
H
H
B0 / D8
H
B0 / D4
H
B0 / D1
H
B0 / D0
H
SV35 Series SATA Product Manual, Rev. B
31
Command name
Command code (in hex)
B0 / D5
S.M.A.R.T. Read Log Sector
S.M.A.R.T. Return Status
S.M.A.R.T. Save Attribute Values
S.M.A.R.T. Write Log Sector
Standby
H
H
B0 / DA
H
H
H
H
B0 / D3
H
B0 / D6
H
96 or E2
H
H
Standby Immediate
94 or E0
H
H
Write Buffer
E8
H
Write DMA
CA
H
Write DMA Extended
Write DMA FUA Extended
Write DMA Without Retries
Write Log Extended
Write Multiple
35
H
CD
H
H
CB
3F
H
C5
H
Write Multiple Extended
Write Multiple FUA Extended
Write Sectors
39
H
CE
H
30
31
34
H
Write Sectors Without Retries
Write Sectors Extended
H
H
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SV35 Series SATA Product Manual, Rev. B
4.3.1
Identify Device command
The Identify Device command (command code EC ) transfers information about the drive to the host following
H
power up. The data is organized as a single 512-byte block of data, whose contents are shown in Table 7 on
page 30. All reserved bits or words should be set to zero. Parameters listed with an “x” are drive-specific or
The following commands contain drive-specific features that may not be included in the Serial ATA specifica-
tion.
Word
Description
Value
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
0C5A
H
0
1
Number of logical cylinders
16,383
2
ATA-reserved
0000
16
H
3
Number of logical heads
4
Retired
0000
0000
H
H
5
Retired
6
Number of logical sectors per logical track: 63
Retired
003F
H
H
7–9
10–19
20
0000
Serial number: (20 ASCII characters, 0000 = none)
ASCII
H
Retired
Retired
Obsolete
0000
0400
0000
x.xx
H
H
H
21
22
23–26
Firmware revision (8 ASCII character string, padded with blanks to end
of string)
27–46
47
Drive model number: (40 ASCII characters, padded with blanks to end
of string)
ST3500641SV
ST3250824SV
ST3160812SV
(Bits 7–0) Maximum sectors per interrupt on Read multiple and Write
multiple (16)
8010
H
H
48
49
50
51
52
Reserved
0000
Standard Standby timer, IORDY supported and may be disabled
2F00
H
H
H
H
ATA-reserved
0000
0200
0200
PIO data-transfer cycle timing mode
Retired
SV35 Series SATA Product Manual, Rev. B
33
Word
53
Description
Value
0007
Words 54–58, 64–70 and 88 are valid
Number of current logical cylinders
Number of current logical heads
Number of current logical sectors per logical track
Current capacity in sectors
H
54
xxxx
xxxx
xxxx
xxxx
xxxx
H
55
H
H
H
H
56
57–58
59
Number of sectors transferred during a Read Multiple or Write Multiple
command
60–61
Total number of user-addressable LBA sectors available
0FFFFFFFh*
*Note: The maximum value allowed in this field is: 0FFFFFFFh
(268,435,455 sectors, 137 Gbytes). Drives with capacities over 137
Gbytes will have 0FFFFFFFh in this field and the actual number of
user-addressable LBAs specified in words 100-103. This is required for
drives that support the 48-bit addressing feature.
62
63
Retired
0000
H
Multiword DMA active and modes supported (see note following this
table)
xx07
H
64
65
66
67
68
Advanced PIO modes supported (modes 3 and 4 supported)
Minimum multiword DMA transfer cycle time per word (120 nsec)
Recommended multiword DMA transfer cycle time per word (120 nsec)
Minimum PIO cycle time without IORDY flow control (240 nsec)
Minimum PIO cycle time with IORDY flow control (120 nsec)
0003
0078
0078
H
H
H
00F0
H
0078
0000
0000
H
H
H
69–74
75
ATA-reserved
Queue depth
76
Serial ATA capabilities
Reserved for future Serial ATA definition
Serial ATA features supported
Serial ATA features enabled
Major version number
xxxx
xxxx
xxxx
xxxx
H
77
H
H
H
78
79
80
003E
H
81
Minor version number
0000
H
82
Command sets supported
364B
H
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SV35 Series SATA Product Manual, Rev. B
Word
83
Description
Value
7C03
Command sets supported
H
84
Command sets support extension
Command sets enabled
4003
H
85
30xx
H
86
Command sets enabled
0001
4000
H
H
H
87
Command sets enable extension
Ultra DMA support and current mode (see note following this table)
Security erase time
88
xx3F
89
0000
H
H
90
Enhanced security erase time
Master password revision code
0000
92
FFFE
H
93
Hardware reset value
(see description following this table)
xxxx
H
95–99
ATA-reserved
0000
H
100–103
Total number of user-addressable LBA sectors available (see Section
2.2 for related information). These words are required for drives that
support the 48-bit addressing feature. Maximum value:
0000FFFFFFFFFFFFh.
ST3500641SV = 976,773,168
ST3250824SV = 488,397,168
ST3160812SV = 312,581,808
104–127
128
ATA-reserved
Security status
Seagate-reserved
ATA-reserved
Integrity word
0000
0001
H
H
129–159
160–254
255
xxxx
H
0000
xxA5
H
H
Note. Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not supported
Note. See the bit descriptions below for words 63, 88, and 93 of the Identify Drive data.
Description (if bit is set to 1)
Bit
0
Word 63
Multiword DMA mode 0 is supported.
Multiword DMA mode 1 is supported.
Multiword DMA mode 2 is supported.
Multiword DMA mode 0 is currently active.
Multiword DMA mode 1 is currently active.
1
2
8
9
SV35 Series SATA Product Manual, Rev. B
35
10
Multiword DMA mode 2 is currently active.
Bit
Word 88
0
Ultra DMA mode 0 is supported.
Ultra DMA mode 1 is supported.
Ultra DMA mode 2 is supported.
Ultra DMA mode 3 is supported.
Ultra DMA mode 4 is supported.
Ultra DMA mode 5 is supported.
Ultra DMA mode 6 is supported.
Ultra DMA mode 0 is currently active.
Ultra DMA mode 1 is currently active.
Ultra DMA mode 2 is currently active.
Ultra DMA mode 3 is currently active.
Ultra DMA mode 4 is currently active.
Ultra DMA mode 5 is currently active.
Ultra DMA mode 6 is currently active.
1
2
3
4
5
6
8
9
10
11
12
13
14
36
SV35 Series SATA Product Manual, Rev. B
4.3.2
Set Features command
This command controls the implementation of various features that the drive supports. When the drive receives
this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an inter-
rupt. If the value in the register does not represent a feature that the drive supports, the command is aborted.
Power-on default has the read look-ahead and write caching features enabled. The acceptable values for the
Features register are defined as follows:
Table 8:
Set Features command values
02
03
Enable write cache (default).
H
H
Set transfer mode (based on value in Sector Count register).
Sector Count register values:
00 Set PIO mode to default (PIO mode 2).
H
01 Set PIO mode to default and disable IORDY (PIO mode 2).
H
08 PIO mode 0
H
09 PIO mode 1
H
0A PIO mode 2
H
0B PIO mode 3
H
0C PIO mode 4 (default)
H
20 Multiword DMA mode 0
H
21 Multiword DMA mode 1
H
22 Multiword DMA mode 2
H
40 Ultra DMA mode 0
H
41 Ultra DMA mode 1
H
42 Ultra DMA mode 2
H
43 Ultra DMA mode 3
H
44 Ultra DMA mode 4
H
45 Ultra DMA mode 5
H
46 Ultra DMA mode 6
H
10
55
82
90
Enable use of SATA features
H
H
H
H
Disable read look-ahead (read cache) feature.
Disable write cache
Disable use of SATA features
AA
Enable read look-ahead (read cache) feature (default).
H
SV35 Series SATA Product Manual, Rev. B
37
Table 8:
Set Features command values
F1
Report full capacity available
H
Note. At power-on, or after a hardware or software reset, the default values of the features are as indi-
cated above.
4.3.3
S.M.A.R.T. commands
S.M.A.R.T. provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the drive moni-
tors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines
that a failure is likely, S.M.A.R.T. makes a status report available to the host. Not all failures are predictable.
S.M.A.R.T. predictability is limited to the attributes the drive can monitor. For more information on S.M.A.R.T.
commands and implementation, see the Draft ATA-5 Standard.
SeaTools diagnostic software activates a built-in drive self-test (DST S.M.A.R.T. command for D4 ) that elimi-
H
nates unnecessary drive returns. The diagnostic software ships with all new drives and is also available at:
This drive is shipped with S.M.A.R.T. features disabled. You must have a recent BIOS or software package that
supports S.M.A.R.T. to enable this feature. The table below shows the S.M.A.R.T. command codes that the
drive uses.
Table 9:
S.M.A.R.T. commands
Code in features register
S.M.A.R.T. command
D0
D2
D3
D4
D5
D6
D8
D9
S.M.A.R.T. Read Data
H
H
H
H
H
H
H
H
S.M.A.R.T. Enable/Disable Attribute Autosave
S.M.A.R.T. Save Attribute Values
S.M.A.R.T. Execute Off-line Immediate (runs DST)
S.M.A.R.T. Read Log Sector
S.M.A.R.T. Write Log Sector
S.M.A.R.T. Enable Operations
S.M.A.R.T. Disable Operations
S.M.A.R.T. Return Status
DA
H
Note. If an appropriate code is not written to the Features Register, the command is aborted and 0x04
(abort) is written to the Error register.
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SV35 Series SATA Product Manual, Rev. B
4.3.4
Streaming feature set support
The Streaming feature set is an optional feature set that allows a host to request delivery of data from a contig-
uous logical block address range within an allotted time. This places a higher priority on time to access the
data than the integrity of the data. Streaming feature set commands only support 48-bit, LBA-mode-only
addressing.
Seagate implements the following Streaming commands:
• CONFIGURE STREAM
• READ STREAM DMA EXT
• WRITE STREAM DMA EXT
Command Completion Time Out (CCTO) errors are not deferrable on DMA operations, as they require some
DMA engine clean up on the host side. Therefore, Seagate does not anticipate supporting any configurations
where a CCTO needs to hide from reporting as an error, and simply show up in a Stream Error log. Since the
Stream Error logs were intended to be used to report deferred errors such as this, Seagate has not imple-
mented them.
4.3.4.1
Identify Device command
These drives will set word 84 bit 4 (Streaming Feature Set Supported) and word 87 bit 4 (Configure Stream
command was issued) when a non-zero default time limit has been set for either reading or writing. If the host
reconfigures both defaults to 0, the bit will clear.
Word 95 (Stream Minimum Request Size)
World 95 contains the number of sectors that provide optimum performance in a streaming environment. This
number shall be a power of two, with a minimum of eight sectors (4096 bytes). The starting LBA value for each
streaming command should be evenly divisible by this request size.
Words 96, 97, and 104
Unsupported.
Words 99:98
These words define the fixed unit of time that is used only in the Command Completion Time Limit (CCTL) that
is passed in streaming commands. The unit of time for this parameter is microseconds. For example, a value of
50000 indicates 50 ms.
4.3.4.2
Streaming commands
Streaming commands are defined to be time-critical data transfers rather than the standard data-integrity-criti-
cal commands. Each command shall be completed within the time specified in the CONFIGURE STREAM
command or in the streaming command itself to ensure the stream requirements of the AV-type application.
The drive may execute background tasks as long as the READ STREAM and WRITE STREAM command exe-
cution time limits are still met.
The host may use the CONFIGURE STREAM command to define the default Command Completion Time
Limit (CCTL) for reads and writes independently--this assists the device in setting up its caching for best per-
formance. If the host does not use a CONFIGURE STREAM command, the device shall use the CCTL speci-
fied in each streaming command, and the time limit is effective for one time only. If the CCTL is not set by a
CONFIGURE STREAM command, the operation of a streaming command with a zero CCTL is device vendor
specific. "Stream ID" as noted in the ATA specification is not used by the Seagate implementation.
SV35 Series SATA Product Manual, Rev. B
39
The streaming commands may access any user LBA on a device. These commands may be interspersed with
non-streaming commands, but there may be an impact on performance due to the unknown time required to
complete the non-streaming commands.
The streaming commands should be issued using a specified minimum number of sectors transferred per com-
mand, as specified in word 95 of the IDENTIFY DEVICE response. The transfer length of a request should be
a multiple of the minimum number of sectors per transfer, as should the starting LBA of any streaming com-
mand.
Urgent bit
The Urgent bit in the READ STREAM and WRITE STREAM commands is ignored. Therefore, bits 9 and 10 of
IDENTIFY DEVICE data words 84 and 87 shall remain clear.
Flush to Disk bit
The Flush to Disk bit in the WRITE STREAM command specifies that all data for the specified stream shall be
flushed to the media before posting command completion. If a host requests flushes at times other than the
end of each Allocation Unit, streaming performance may be degraded. Using the SET FEATURES command
to enable/disable caching may not affect caching for streaming commands.
Not Sequential bit
The Not Sequential bit specifies that the next LBA(s) after those requested in the current READ STREAM com-
mand are not anticipated to be used in a subsequent READ STREAM command. This information may help
the device with pre-fetching decisions.
Read Continuous bit
If the Read Continuous bit is set to 1 for the command, the device shall attempt to transfer the requested
amount of data to the host within the Command Completion Time Limit even if an error occurs. The data sent to
the host by the device in an error condition is vendor specific.
Write Continuous bit
If the Write Continuous bit is set to 1 for the command and an error is encountered, the device shall still attempt
to complete the transfer within the requested time. If an error occurs and cannot be resolved within the Com-
mand Completion Time Limit, the erroneous section on the media may be unchanged or may contain unde-
fined data. A future read of this area may not report an error, even though the data is erroneous. If the Flush Bit
is set to 1 on the STREAM WRITE command and the data cannot successfully be written to the media, then
the drive will report a Stream Error on the command.
Handle Streaming Error bit
The Handle Streaming Error bit specifies to the drive that this command starts at the LBA of a recently reported
error section, so the device may attempt to continue its corresponding error recovery sequence where it left off
earlier. This mechanism allows the host to schedule error recovery and defect management for content critical
data.
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SV35 Series SATA Product Manual, Rev. B
4.3.4.2.1
Configure Stream (51h)
The Configure Stream command specifies the default CCTL (Command Completion Time Limit) for streaming
commands, and informs the drive of the Allocation Unit size and alignment.
Protocol: non-data
Register
7
6
5
4
3
2
1
0
Features
Current
Previous
Current
Previous
Current
Previous
Ignored
R/W
Reserved
Ignored
Default CCTL (7:0)
AU Size In Sectors (7:0)
AU Size In Sectors (15:8)
Reserved
Sector Count
LBA Low, Mid, High
Reserved
Device
obs
Ignored
obs
DEV
Reserved
Command
51h
Note: The value indicated as Current is the value most recently written to the register. The value indicated as Previous is
the value that was in the register before the most recent write to the register.
FEATURES REGISTER FIELD DESCRIPTIONS
R/W
0
1
Read stream
Write stream
Default CCTL (Default Command Completion Time Limit)
This value is calculated as follows (with the unit of measure being microseconds):
Default CCTL = ((content of the Features register) * (IDENTIFY DEVICE words (99:98))
This time shall be used by the drive when an individual streaming command with a CCTL of 0 is issued. The
time is measured from the write of the command register to the final INTRQ for command completion.
SECTOR COUNT REGISTER FIELD DESCRIPTIONS
Current
The size of an Allocation Unit in sectors (bits 7:0).
Previous
The size of an Allocation Unit in sectors (bits 15:8)
DEVICE REGISTER FIELD DESCRIPTIONS
Dev
The selected device.
SV35 Series SATA Product Manual, Rev. B
41
4.3.4.2.2
Read Stream DMA (2Ah)
Protocol: DMA In
This command reads from 1 to 65536 sectors as specified in the Sector Count register. A value of 0000h in the
Sector Count register requests 65536 sectors.
The RC bit indicates that the drive operate in a continuous read mode for the READ STREAM command.
When RC is set to 0, the drive shall operate in normal streaming read mode.
When the Read Continuous mode is enabled, the drive shall attempt to transfer data of the requested length
without setting the ERR bit to 1. The SE bit shall be set to 1 if the data transferred includes errors, unless the
transfer is unable to finish within the CCTL, in which case a CCTO error will be reported (see below). If an error
is encountered, it may be necessary for the drive to pad the data being transferred to fulfill the host's requested
transfer size. The implementation of the padding is vendor specific.
If the drive is unable to transfer the correct amount of data by the CCTL, the drive will set the ERR bit to 1 and
the BSY bit to 0 in the Status Register, and the CCTO bit to 1 in the Error Register.
Register
7
6
5
4
3
2
1
0
Features
Current
Previous
Current
Previous
Current
Previous
Ignored
RC
NS
Ignored
r
Ignored
Command Completion Time Limit (7:0)
Sector count
Sector Count
LBA Low, Mid, High
LBA
Device
obs
LBA
obs
DEV
Reserved
Command
2Ah
Note: The value indicated as Current is the value most recently written to the register. The value indicated as Previous is
the value that was in the register before the most recent write to the register.
FEATURES REGISTER FIELD DESCRIPTIONS
RC (Read Continuous mode enabled)
Regardless of the RC setting, if it is not possible to transfer the full amount of data that the host requested
before the CCTL, the drive shall provide ending status with the BSY bit cleared to 0, the SE bit set to 0, the
ERR bit set, and the CCTO bit set in the Error Register.
NS (Not Sequential)
This bit specifies that the next LBAs after those requested in the current READ STREAM command are not
anticipated to be read in a near-future read stream command.
Features Register Previous
The time allowed for the current command’s completion. This is calcuated as follows:
CCTL = (content of the Features Register Previous) * (IDENTIFY DEVICE words (99:98))
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SV35 Series SATA Product Manual, Rev. B
If the value is 0, the drive shall use the Default Command Completion Time Limit supplied with the most recent
previous CONFIGURE STREAM command for this Stream type (Read or Write). If the Default Command Com-
pletion Time Limit is 0, or no previous Configure Stream command was defined for this Stream type, the result
is vendor specific. The time is measured from the write of the command register to the final INTRQ for com-
mand completion.
Error Outputs
If the RC bit is set to 0, the content of the registers shall be as shown below. If the RC bit is set to 1 and the
drive was able to transfer the correct amount of data (even though some of it may be incorrect), the SE bit shall
be set to 1, the ERR bit shall be set to 0.
Register
7
6
5
4
3
2
1
0
Error
ICRC
UNC
N/A
IDNF
N/A
ABRT
N/A
CCTO
Sector Count
HOB = 0
HOB = 1
HOB = 0
HOB = 1
HOB = 0
HOB = 1
HOB = 0
HOB = 1
Length of Stream Error (7:0)
Length of Stream Error (15:8)
LBA (7:0)
LBA Low
LBA Mid
LBA High
LBA (31:24)
LBA (15:8)
LBA (39:32)
LBA (23:16)
LBA (47:40)
Device
Status
obs
N/A
obs
SE
DEV
Reserved
BSY
DRDY
Unused
DRQ
N/A
N/A
ERR
Note: HOB = 0 indicates the value read by the host when the HOB bit of the Device Control register is cleared to zero.
HOB = 1 indicates the value read by the host when the HOB bit of the Device Control register is set to one.
ERROR REGISTER FIELD DESCRIPTIONS
ICRC (Interface CRC Error)
1
This bit shall be set to 1 if an interface CRC error has occurred during an Ultra DMA data transfer. The
content of this bit is not applicable for Multiword DMA transfers.
UNC (Uncorrectable)
1
This bit shall be set to 1 if data is uncorrectable. This bit should never be set on a streaming command.
IDNF
1
This bit shall be set to 1 if a user-accessible address could not be found. This bit shall be set to 1 if an
address outside of the range of user-accessible addresses is requested if command aborted is not
returned.
ABRT
1
This bit shall be set to 1 if this command is not supported. ABRT may be set to 1 if the device is not
able to complete the action requested by the command. ABRT shall be set to 1 if an address outside of
the range of user-accessible addresses is requested if IDNF is not set to 1.
SV35 Series SATA Product Manual, Rev. B
43
CCTO (Command Completion Time Out)
This bit shall be set to 1 if a Command Completion Time Out error has occurred.
1
SECTOR COUNT REGISTER FIELD DESCRIPTIONS
LBA Low/Mid/High
The address of the first uncorrectable error.
DEVICE REGISTER FIELD DESCRIPTIONS
DEV
This field indicates the selected device.
STATUS REGISTER FIELD DESCRIPTIONS
BSY
0
This bit shall be set to 0 indicating command completion.
DRDY
1
SE (Stream Error)
1
This bit shall be set to one if the data contained erroneous data (even though the correct amount of
data was transferred to the host). In this case, the LBA returned in the Sector Number registers shall
be the address of the first sector in error, and the Sector Count registers shall contain the number of
consecutive sectors that may contain errors.
DRQ
0
This bit shall be set to 0.
ERR
1
This bit shall be set to 1 if an Error register bit is set to 1.
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SV35 Series SATA Product Manual, Rev. B
4.3.4.3
Write Stream DMA (3Ah)
Protocol: DMA Out
The Write Stream DMA command allows the host to write data using the DMA data transfer protocol. This com-
mand allows for the host to specify to the device that additional actions need to be performed prior to the com-
pletion of the command if the required bits are set.
If the Write Continuous bit is set to 1, the device shall attempt to not stop execution of the command due to
errors. If the WC bit is set to 1 and errors occur in the transfer or writing of the data, the device shall attempt to
continue to transfer the amount of data requested and then provide ending status with the BSY bit cleared to
zero, the SE bit set to 1, the ERR bit cleared to 0. If the WC bit is set to 1 and the Command Completion Time
Limit expires, the device shall stop execution of the command and provide ending status with the BSY bit
cleared to 0, the SE bit clear, the ERR bit set, and report the fact that the Command Completion Time Limit
expired by setting the CCTO bit in the error register. In all cases, the drive shall attempt to transfer the amount
of data requested within the Command Completion Time Limit even if some data transferred is in error.
Additionally, if the F bit is set for a Write Stream command, the drive shall conclude processing for the com-
mand (including flushing it to the media) before posting status.
Register
7
6
5
4
3
2
1
0
Features
Current
Previous
Current
Previous
Current
Previous
Ignored
WC
F
Ignored
r
Ignored
Command Completion Time Limit (7:0)
Sector count
Sector Count
LBA Low, Mid, High
LBA
Device
obs
LBA
obs
DEV
Reserved
Command
3Ah
Note: The value indicated as Current is the value most recently written to the register. The value indicated as Previous is
the value that was in the register before the most recent write to the register.
FEATURES REGISTER FIELD DESCRIPTIONS
WC (Write Continuous)
This bit indicates if Write Continuous mode is enabled.
1
The device shall attempt to not stop execution of the command due to errors. If the WC bit is set to 1
and errors occur in the transfer or writing of data, the device shall attempt to continue to transfer the
amount of data requested, and then provide ending status with the BSY bit cleared to 0, the SE bit set
to 1, and the ERR bit cleared to 0. If the WC bit is set to 1 and the Command COmpletion Time Limit
expires, te device shall stop execution of the command and provide ending status with the BSY bit
cleared to 0, the SE bit clear, the ERR bit set, and report the fact that the Command Completion Time
Limit expired by setting the CCTO bit in the error register to 1. In all cases, the device shall attempt to
transfer the amount of data requested within the Command Completion Time Limit even if some data
transferred is in error.
SV35 Series SATA Product Manual, Rev. B
45
F
1
This bit specifies that all data for the specified stream shall be flushed to the media before command
complete is reported.
CCTL (Command Completion Time Limit)
The time allowed for the current command to complete. This value is calculated as follows:
CCTL = (content of the Features register Previous) * (IDENTIFY DEVICE data words (99:98)) microseconds
0
The device shall use the Default Command Completion Time Limit supplied with the most recent previ-
ous CONFIGURE STREAM command for this Stream type (Read or Write). If the Default Command
Completion Time Limit = 0, or no previous Configure Stream command was defined for this Stream ID,
the result is vendor specific. The time is measured from the write of the command register to the final
INTRQ for command completion.
Error Outputs
If the WC bit is set to 0, the content of the registers shall be as shown below. If the WC bit is set to 1 and the
drive was able to transfer the correct amount of data (even though some of it may be written incorrectly to the
media), the SE bit shall be set to 1 and the ERR bit shall be set to 0.
Register
7
6
5
4
3
2
1
0
Error
ICRC
N/A
N/A
IDNF
N/A
ABRT
N/A
CCTO
Sector Count
HOB = 0
HOB = 1
HOB = 0
HOB = 1
HOB = 0
HOB = 1
HOB = 0
HOB = 1
Length of Stream Error (7:0)
Length of Stream Error (15:8)
LBA (7:0)
LBA Low
LBA Mid
LBA High
LBA (31:24)
LBA (15:8)
LBA (39:32)
LBA (23:16)
LBA (47:40)
Device
Status
obs
N/A
obs
SE
DEV
Reserved
BSY
DRDY
Unused
DRQ
N/A
N/A
ERR
Note: HOB = 0 indicates the value read by the host where the HOB bit of the Device Control register is set to 0. HOB = 1
indicates the value read by the host when the HOB bit of the Device Control register is set to 1.
ERROR REGISTER FIELD DESCRIPTIONS
ICRC
1
This bit shall be set to 1 if an interface CRC error has occurred during an Ultra DMA data transfer. The
content of this bit is not applicable for Multiword DMA transfers.
46
SV35 Series SATA Product Manual, Rev. B
IDNF
1
This bit shall be set to 1 if a user-accessible address could not be found. IDNF shall be set to 1 if an
address outside of the range of user-accessible addresses is requested if command aborted is not
returned.
ABRT
1
This bit shall be set to 1 if this command is not supported. ABRT may be set to 1 if the device is not
able to complete the action requested by the command. ABRT shall be set to 1 if an address outside of
the range of user-accessible addresses is requested if IDNF is not set to 1.
CCTO
1
This bit shall be set to 1 if a Command Completion Time Out error has occurred.
SECTOR COUNT REGISTER FIELD DESCRIPTIONS
Current, Previous
These bits contain the number of contiguous sectors potentially written unsuccessfully, or with bad data, begin-
ning with the LBA of the first corrupted sector.
LBA (Low, Mid, High) (Current, Previous)
These bits contain the address of the first potentially corrupted sector.
DEVICE REGISTER FIELD DESCRIPTIONS
DEV
This bit shall indicate the selected device.
STATUS REGISTER FIELD DESCRIPTIONS
BSY
0
This bit shall be set to 0 indicating command completion.
DRDY
1
This bit shall be set to 1.
SE (Stream Error)
1
This bit shall be set to 1 if an error has occurred during the execution of the command when the WC bit
is set to 1 and the correct amount of data was transferred from the host. In this case, the LBA returned
in the Sector Number registers shall be the address of the first sector in error, and the Sector Count
registers shall contain the number of consecutive sectors that may contain errors.
DRQ
0
This bit shall be set to 0.
ERR
1
This bit shall be set to 1 if an Error register bit is set to 1 and the WC bit is set to 0, or if the drive was
unable to transfer the correct amount of data to the host.
4.3.4.3.1
Time-constrained operations
In general, time constraints have impacts not only on data transfer between the drive and the host, but also on
the drive’s internal motion and movement of data to and from the internal buffer (cache). If the drive moves its
actuator to access some data other than what the host is (or shortly will be) accessing, there will be an
unavoidable delay before the actuator can be moved to where the host needs it to be to service a command.
SV35 Series SATA Product Manual, Rev. B
47
If write caching is allowed, the actuator could be busy servicing a cached write at virtually any time. The impli-
cation is that a timeout on a read command could actually be due to a cached write. To address this case:
• Streaming commands will not time out if there is a non-streaming cached write in progress
• all cached write data is discarded if a timeout occurs on a streaming command
• when the host issues a streaming read to the drive, internal drive activity is limited to minimize the chances
that significant time will be spent on a normal write, and
• timeouts are inhibited if this case is occurring.
4.3.4.3.2
Non-cached streaming writes use model
The host can issue streaming writes. If this is done, it is recommended that the host either set the F bit or dis-
able write caching. If the host does neither, the drive has no way to accurately report the failure location and
length in the event of a write failure on a cached write. Disabling caching or using the F bit will cause some per-
formance loss compared to the case where caching was allowed. The most straightforward way to ensure that
performance is maintained in this usage model is for the host to issue large writes, so that the seek time is
insignificant when compared to the amount of time that the host can allow the command to consume. If the
host’s time limit allows, the drive will perform internal defect management on any defective sectors encoun-
tered. If the drive runs out of time during a write of this type, any currently cached sectors in the drive’s buffer
will be discarded. If the error occured in the LBA range of the current command (rather than a cached com-
mand), the portion of that write that may not have been successfully written to the media will be reported to the
host in the ending status of the write command.
4.3.4.3.3
Non-streaming writes
In non-streaming writes, the drive does not discard any write data, but rather protects the data as if it were in a
non-timed environment altogether. The cache algorithm ensures that if a write to the media is begun, it will be
finished during the write command on the ATA bus, and will not adversely affect a streaming read.
A system may use this mode during boot, and then switch over to Streaming Writes for operational mode, back
again to untimed mode for maintenance, etc. This behavior can be safe as long as a Flush Cache command is
issued and completed before switching between write command types.
48
SV35 Series SATA Product Manual, Rev. B
5.0
Seagate Technology support services
Internet
For information regarding Seagate products and services, visit www.seagate.com. Worldwide support is
available 24 hours daily by email for your questions.
Presales Support:
Technical Support:
Warranty Support:
mySeagate
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benefits or to register, go to spp.seagate.com, any time, from anywhere in the world.
Seagate Service Centers
Presales Support
Our Presales Support staff can help you determine which Seagate products are best suited for your specific
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Technical Support
Seagate technical support is available to assist you online at support.seagate.com or through one of our call
centers. Have your system configuration information and your “ST” model number available.
SeaTDD™ (+1-405-324-3655) is a telecommunications device for the deaf (TDD). You can send questions or
comments 24 hours daily and exchange messages with a technical support specialist during normal business
hours for the call center in your region.
SV35 Series SATA Product Manual, Rev. B
49
Customer Service Operations
Warranty Service
Seagate offers worldwide customer support for Seagate products. Seagate distributors, OEMs and other direct
customers should contact their Seagate Customer Service Operations (CSO) representative for warranty-
related issues. Resellers or end users of drive products should contact their place of purchase or Seagate
warranty service for assistance. Have your serial number and model or part number available.
Data Recovery Services
Seagate offers data recovery services for all formats and all brands of storage media. Our data recovery
services labs are currently located throughout the world. . Additional information, including an online request
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Authorized Service Centers
Seagate Service Centers are available on a global basis for the return of defective products. Contact your
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For an extensive list of telephone numbers to technical support, presales and warranty service in USA/
Global Customer Support
Presales, Technical, and Warranty Support
Call Center
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and Mexico
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and Mexico
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+1-905-474-2162
1-800-475-0158
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For an extensive list of telephone numbers to technical support, presales and warranty service in Europe, the
Asia/Pacific Support Services
For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific,
50
SV35 Series SATA Product Manual, Rev. B
connectors 25
Index
Numerics
A
ACA 20
acceleration 17
Active 15
AFR 19
altitude 16
cycles 19
Cylinders 10
D
dimensions 26
displacement 17
Australia/New Zealand Standard AS/NZS3548 1995
E
Electromagnetic Compatibility Directive (89/336/EEC)
EPRML 11
B
C
cache 11
capacity 10
certification 19
ESD 23
compatibility 19
EU 19
European Union Restriction of Hazardous Substanc-
es 21
SV35 Series SATA Product Manual, Rev. B
51
Seagate Technology LLC
920 Disc Drive, Scotts Valley, California 95066-4544, USA
Publication Number: 100415208, Rev. B, Printed in USA
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