Product Manual
Barracuda 7200.11 Serial ATA
ST31000340AS
ST31000640AS
ST3750330AS
ST3750630AS
ST3500320AS
ST3500620AS
ST3500820AS
100452348
Rev. D
February 2008
Contents
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.9.1 Test for Prominent Discrete Tones (PDTs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
S.M.A.R.T. commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.0
Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
i
ii
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
List of Figures
Figure 5.
Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Typical 12V startup and operation current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Mounting dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
iii
1.0
Introduction
This manual describes the functional, mechanical and interface specifications for the following Seagate
Barracuda® 7200.11 Serial ATA model drives:
ST31000340AS
ST31000640AS
ST3750330AS
ST3750630AS
ST3500320AS
ST3500620AS
ST3500820AS
These drives provide the following key features:
• 7,200 RPM spindle speed.
• High instantaneous (burst) data-transfer rates (up to 300 Mbytes per second).
• Perpendicular recording, Tunneling Magnetoresistive (TMR) recording heads and EPRML technology, for
increased areal density.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Native Command Queueing with command ordering to increase performance in demanding applications.
• Full-track multiple-sector transfer capability without local processor intervention.
• Quiet operation.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Supports latching SATA cables and connectors.
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
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 International
2
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
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 drive models:
ST31000340AS
ST31000640AS
ST3750330AS
ST3750630AS
ST3500320AS
ST3500620AS
ST3500820AS
Specification summary tables
The specifications listed in the following tables are for quick reference. For details on specification measure-
ment or definition, see the appropriate section of this manual.
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
3
Table 1:
Drive specifications summary for 1000 and 750 Gbyte models
Drive specification
ST31000340AS
1000 Gbytes
1,953,525,168
8
ST31000640AS
ST3750330AS
ST3750630AS
Formatted capacity (512 bytes/sector)*
Guaranteed sectors
Heads
750 Gbytes
1,465,149,168
6
3
Discs
4
Bytes per sector
512
Default sectors per track
Default read/write heads
Default cylinders
63
16
16,383
Recording density
1090 kbits/in max
150 ktracks/in avg
164 Gbits/in2 avg
7,200 RPM
1287 Mbits/sec max
105 Mbytes/sec max
300 Mbytes/sec max
PIO modes 0–4
Track density
Areal density
Spindle speed
Internal data transfer rate
Sustained data transfer rate OD
I/O data-transfer rate
ATA data-transfer modes supported
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer
32 Mbytes
16 Mbytes
32 Mbytes
16 Mbytes
Height (max)
26.1 mm (1.028 inches)
101.6 mm (4.000 inches) +/- 0.010 inches
146.99 mm (5.787 inches)
677 grams ( 1.493 lb.)
4.16 msec
Width (max)
Length (max)
Weight (typical)
Average latency
Power-on to ready
Standby to ready
Track-to-track seek time
633 grams ( 1.396 lb.)
20 sec max
15 sec max
<1.0 msec typical read;
<1.2 msec typical write
Average seek, read
<8.5 msec typical
<9.5 msec typical
3.0 amps
Average seek, write
Startup current (typical) 12V (peak)
Voltage tolerance (including noise)
5V +10% / -7.5%
12V +10% / -7.5%
Ambient temperature
Temperature gradient
Relative humidity
0° to 60°C per hour max (operating)
–40° to 70°C per hour max (nonoperating)
20°C per hour max (operating)
30°C per hour max (nonoperating)
5% to 95% (operating)
5% to 95% (nonoperating)
Relative humidity gradient
Wet bulb temperature
30% per hour max
37.7°C max (operating)
40.0°C max (nonoperating)
Altitude, operating
–60.96 m to 3,048 m
(–200 ft. to 10,000+ ft.)
Altitude, nonoperating
(below mean sea level, max)
–60.96 m to 12,192 m
(–200 ft. to 40,000+ ft.)
Operational Shock
63 Gs max at 2 msec
300 Gs max at 2 msec
Non-Operational Shock
4
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
Drive specification
Vibration, operating
ST31000340AS
ST31000640AS
ST3750330AS
ST3750630AS
2–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.50 Gs
350–500 Hz:: 0.25 Gs
Vibration, nonoperating
5–22 Hz: 2.0 Gs
22–350 Hz: 5.0 Gs
350–500 Hz:: 2.0 Gs
Drive acoustics, sound power
Idle**
2.9 bels (typical)
3.1 bels (max)
Performance Seek
Quiet Seek
3.2 bels (typical)
33 bels (max)
3.1 bels (typical)
3.2 bels (max)
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Warranty
1 per 1014 bits read
0.34%
5 years on distribution units.
To determine the warranty for a specific drive, use a web browser to access the following
web page: www.seagate.com/support/service/
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 at 25°C, 50% rel. humidity
Yes
Supports Hotplug operation per the
Serial ATA Revision 2.5 specification
*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.
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
5
Table 2:
Drive specifications summary for 500 Gbyte models
Drive specification
ST3500320AS
500 Gbytes
976,773,168
4
ST3500620AS
ST3500820AS
Formatted capacity (512 bytes/sector)*
Guaranteed sectors
Heads
Discs
2
Bytes per sector
512
Default sectors per track
Default read/write heads
Default cylinders
63
16
16,383
Recording density
1090 kbits/in max
150 ktracks/in avg
164 Gbits/in2 avg
7,200 RPM
1287 Mbits/sec max
105 Mbytes/sec max
300 Mbytes/sec max
Track density
Areal density
Spindle speed
Internal data transfer rate
Sustained data transfer rate OD
I/O data-transfer rate
ATA data-transfer modes supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer
32 Mbytes
16 Mbytes
8 Mbytes
Height (max)
26.1 mm (1.028 inches)
Width (max)
101.6 mm (4.000 inches) +/- 0.010 inches
146.99 mm (5.787 inches)
543 grams ( 1.199 lb.)
4.16 msec
Length (max)
Weight (typical)
Average latency
Power-on to ready
Standby to ready
Track-to-track seek time
20 sec max
14 sec max
<0.8 msec typical read;
<1.0 msec typical write
Average seek, read
<8.5 msec typical
<9.5 msec typical
3.0 amps
Average seek, write
Startup current (typical) 12V (peak)
Voltage tolerance (including noise)
5V +10% / -7.5%
12V +10% / -7.5%
Ambient temperature
Temperature gradient
Relative humidity
0° to 60°C per hour max (operating)
–40° to 70°C per hour max (nonoperating)
20°C per hour max (operating)
30°C per hour max (nonoperating)
5% to 95% (operating)
5% to 95% (nonoperating)
Relative humidity gradient
Wet bulb temperature
30% per hour max
37.7°C max (operating)
40.0°C max (nonoperating)
Altitude, operating
–60.96 m to 3,048 m
(–200 ft. to 10,000+ ft.)
Altitude, nonoperating
(below mean sea level, max)
–60.96 m to 12,192 m
(–200 ft. to 40,000+ ft.)
Operational Shock
63 Gs max at 2 msec
300 Gs max at 2 msec
Non-Operational Shock
6
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
Drive specification
Vibration, operating
ST3500320AS
ST3500620AS
ST3500820AS
2–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.50 Gs
350–500 Hz:: 0.25 Gs
Vibration, nonoperating
5–22 Hz: 2.0 Gs
22–350 Hz: 5.0 Gs
350–500 Hz:: 2.0 Gs
Drive acoustics, sound power
Idle**
2.7 bels (typical)
2.9 bels (max)
Performance Seek
Quiet Seek
3.1 bels (typical)
3.2 bels (max)
3.0 bels (typical)
3.1 bels (max)
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Warranty
1 per 1014 bits read
0.34%
5 years on distribution units.
To determine the warranty for a specific drive, use a web browser to access the following
web page: www.seagate.com/support/service/
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.
Drive acoustics, sound power
Supports Hotplug operation per the
Serial ATA Revision 2.5 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.
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
7
2.1
Formatted capacity
Formatted
capacity*
Guaranteed
sectors
Model
Bytes per sector
ST31000340AS
ST31000640AS
1000 Gbytes
750 Gbytes
1,953,525,168
1,465,149,168
512
512
ST3750330AS
ST3750630AS
ST3500320AS
ST3500620AS
ST3500820AS
500 Gbytes
976,773,168
512
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
2.1.1
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.
2.2
Default logical geometry
Cylinders
Read/write heads
Sectors per track
16,383
16
63
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.
2.3
Recording and interface technology
Interface
Serial ATA (SATA)
Recording method
Perpendicular
1090
Recording density (kbits/inch max)
Track density (ktracks/inch avg)
150
2
Areal density (Gbits/inch avg)
164
Spindle speed (RPM)
7,200 ± 0.2%
1287
Internal data transfer rate (Mbits/sec max)
Sustained data transfer rate (Mbytes/sec max)
I/O data-transfer rate (Mbytes/sec max)
105
300
8
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
2.4
Physical characteristics
Maximum height (1000-500 GB models)
Maximum width
26.1 mm (1.028 inches)
101.6 mm (4.000 +/- 0.010 inches)
146.99 mm (5.787 inches)
Maximum length
Typical weight
1000 GB models
677 grams (1.493 lbs)
633 grams (1.396 lbs)
543 grams (1.199 lbs)
750 GB models
500 GB models
Cache buffer
ST31000340AS, ST3750330AS and ST3500320AS
ST31000640AS, ST3750630AS and ST3500620AS
ST3500820AS
32 Mbytes (32,768 kbytes)
16 Mbytes (16,384 kbytes)
8 Mbytes (8,192 kbytes)
2.5
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 (1000 GB & 750 GB models)
Track-to-track (500 GB models)
Average
Read
<1.0
<0.8
<8.5
4.16
Write
<1.2
<1.0
<9.5
Average latency:
*Measured in performance mode.
**Measured in quiet mode.
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 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.
2.6
Start/stop times
1000 GB
Models
750 GB
Models
500 GB
Models
Power-on to Ready (sec)
20 (max)
17 (max)
15 (max)
10 (max)
Power-on to Ready (sec) (2.0 Amp Code Option)
Standby to Ready (sec)
14 (max)
Ready to spindle stop (sec)
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
9
2.7
Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 4 on page 20.
2.7.1 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.
• Read/write power and current
Read/write power is measured with the heads on track, based on a 16-sector write followed by a 32-msec
delay, then a 16-sector read followed by a 32-msec delay.
• Operating power and current
Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each
10 reads) and 20 percent drive idle mode.
• 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.
Table 3:
DC power requirements
Power dissipation (4-disc values shown)
Avg (watts 25° C)
Avg 5V typ amps
—
Avg 12V typ amps
3.0 (peak)
0.530
Spinup
—
Idle*
7.96
9.29
11.16
10.42
0.99
0.99
0.320
Idle* (with offline activity)
Operating (40% r/w, 40% seek, 20% inop.)
Seeking (random, 20% idle)
Standby
0.610
0.520
0.600
0.680
0.500
0.660
0.150
0.020
Sleep
0.150
0.020
*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.
10
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
2.7.2
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.
2.7.3
Voltage tolerance
Voltage tolerance (including noise):
5V +10% / -7.5%
12V +10% / -7.5%
2.7.4
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
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.
12
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
2.8
Environmental specifications
Ambient temperature
2.8.1
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.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) 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)
2.8.2
Temperature gradient
Operating:
20°C per hour (68°F per hour max), without condensation
30°C per hour (86°F per hour max)
Nonoperating:
2.8.3
2.8.3.1
Humidity
Relative humidity
Operating:
Nonoperating:
5% to 95% noncondensing (30% per hour max)
5% to 95% noncondensing (30% per hour max)
2.8.3.2
Wet bulb temperature
Operating:
37.7°C (99.9°F max)
40°C (104°F max)
Nonoperating:
2.8.4
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:
2.8.5
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.
2.8.5.1
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.
2.8.5.2
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 based on a nonrepetitive half-sine shock pulse
of 2 msec duration.
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
13
2.8.6
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.
2.8.6.1
Operating vibration
The maximum vibration levels that the drive may experience while meeting the performance standards speci-
fied in this document are specified below.
2–22 Hz
0.25 Gs (Limited displacement)
22–350 Hz
350–500 Hz
0.50 Gs
0.25 Gs
2.8.6.2
Nonoperating vibration
The maximum nonoperating vibration levels that the drive may experience without incurring physical damage
or degradation in performance when subsequently put into operation are specified below.
1000 GB, 750 GB and 500 GB models
5–22 Hz
2.0 Gs (limited displacement)
22–350 Hz
350–500 Hz
5.0 Gs
2.0 Gs
14
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
2.9
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)
Table 4:
Fluid Dynamic Bearing (FDB) motor acoustics
Idle*
Performance Seek
Quiet Seek
ST31000340AS, ST31000640AS,
ST3750330AS and ST3750630AS
2.9 bels (typ)
3.1 bels (max)
3.2 bels (typ)
3.3 bels (max)
3.1 bels (typ)
3.2 bels (max)
ST3500320AS, ST3500620AS and
ST3500820AS
2.7 bels (typ)
2.9 bels (max)
3.1 bels (typ)
3.2 bels (max)
3.0 bels (typ)
3.1 bels (max)
*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.
2.9.1
Test for Prominent Discrete Tones (PDTs)
Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this
process is the use of the absolute threshold of hearing. Seagate uses this threshold curve (originated in ISO
389-7) to discern tone audibility and to compensate for the inaudible components of sound prior to computation
of tone ratios according to Annex D of the ECMA-74 standards.
2.10
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:
Test
Radio frequency environments
Description
Performance level
Reference standard
Electrostatic
discharge
Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV
B
EN 61000-4-2: 95
Radiated RF
immunity
80 to 1,000 MHz, 3 V/m,
A
B
EN 61000-4-3: 96
ENV 50204: 95
80% AM with 1 kHz sine
900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz
Electrical fast
transient
± 1 kV on AC mains, ± 0.5 kV on external I/O
EN 61000-4-4: 95
Surge immunity ± 1 kV differential, ± 2 kV common, AC mains
B
A
EN 61000-4-5: 95
EN 61000-4-6: 97
Conducted RF
immunity
150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine
Voltage dips,
interrupts
0% open, 5 seconds
0% short, 5 seconds
40%, 0.10 seconds
70%, 0.01 seconds
C
C
C
B
EN 61000-4-11: 94
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
15
2.11
Reliability
2.11.1
Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)
The product shall achieve an Annualized Failure Rate (AFR) of 0.34% (MTBF of 0.7 million hours) when oper-
ated in an environment of ambient air temperatures of 25°C. Operation at temperatures outside the specifica-
tions in Section 2.8 may increase the product AFR (decrease MTBF). AFR and MTBF are population statistics
that are not relevant to individual units.
AFR and MTBF specifications are based on the following assumptions for desktop personal computer environ-
ments:
• 2400 power-on-hours per year.
• 10,000 average motor start/stop cycles per year.
• Operations at nominal voltages.
• Normal I/O duty cycle for desktop personal computers. Operation at excessive I/O duty cycle may degrade
product reliability.
The desktop personal computer environment of power-on-hours, temperature, and I/O duty cycle affect the
product AFR and MTBF. The AFR and MTBF will be degraded if used in an enterprise application
14
Nonrecoverable read errors
Annualized Failure Rate (AFR)
Contact start-stop cycles
1 per 10 bits read, max
0.34% (nominal power, 25°C ambient temperature)
50,000 cycles
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)
Warranty
5 years on distribution units.
To determine the warranty for a specific drive, use a web browser to access the
following web page: www.seagate.com/support/service/
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.
Preventive maintenance
None required.
2.12
Agency certification
2.12.1
Safety certification
The drives are recognized in accordance with UL60950-1 and CSA C22.2 (950) and meet all applicable sec-
tions of IEC950 and EN 60950.
2.12.2
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.
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.
16
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
Korean RRL
If these drives have the Korea Ministry of Information and Communication (MIC) logo, they comply with
paragraph 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
Susceptibility (EMI/EMS) for Class B products. Drives are tested in a representative, end-user system by a
Korean-recognized lab.
• Family name: Barracuda 7200.11
• Certificate number: 1000 GB-
STX- ST31000340AS (B)
STX- ST31000340AS (B)
STX- ST3500320AS (B)
750 GB-
500 GB-
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
Communication Authority (ACA).
2.12.3
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
marketed to the customer. As a subassembly, no Federal Communications Commission verification or
certification of the device is required.
Seagate 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
installation. 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
suggestions. 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.
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
17
2.13
Environmental protection
Seagate designs its products to meet environmental protection requirements worldwide, including regulations
restricting certain chemical substances.
2.13.1
European Union Restriction of Hazardous Substances (RoHS) Directive
Seagate designs its products to meet environmental protection requirements worldwide, including regulations
restricting certain chemical substances. A new law, the European Union Restriction of Hazardous Substances
(RoHS) Directive, restricts the presence of chemical substances, including Lead, Cadmium, Mercury,
Hexavalent Chromium, PBB and PBDE, in electronic products, effective July 2006. This drive is manufactured
with components and materials that comply with the RoHS Directive.
2.13.2
2.13.2
China Restriction of Hazardous Substances (RoHS) Directive
中国限制危险物品的指令
This product has an Environmental Protection Use Period (EPUP) of 20 years. The following
table contains information mandated by China's "Marking Requirements for Control of Pollution
Caused by Electronic Information Products" Standard.
"O" indicates the hazardous and toxic substance content of the part (at the homogenous material level) is lower
than the threshold defined by the China RoHS MCV Standard.
“O”表示该部件（于同类物品程度上）所含的危险和有毒物质低于中国RoHS MCV标准所定义的门槛值。
"X" indicates the hazardous and toxic substance content of the part (at the homogenous material level) is over
the threshold defined by the China RoHS MCV Standard.
“X”表示该部件（于同类物品程度上）所含的危险和有毒物质超出中国RoHS MCV标准所定义的门槛值。
2.14
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 corrosive
chemicals as electronic drive component reliability can be affected by the installation environment. The silver,
copper, nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide, chlo-
ride, 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.
18
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
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:
• 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.
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
19
3.2
Configuring the drive
Each drive on the Serial ATA interface connects point-to-point with the Serial ATA host adapter. There is no
master/slave relationship because each drive is considered a master in a point-to-point relationship. 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. 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:
• Install a jumper as shown in Figure 3 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, leave the drive jumper block set to “Normal
operation” (see Figure 3 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 interface connector
Figure 3. Serial ATA connectors
SATA power connector
3.3
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.
For installations which require cables, you can connect the drive as illustrated in Figure 4.
Signal connector
Power connector
Signal cable
Power cable
Figure 4. Attaching SATA cabling
Each cable is keyed to ensure correct orientation. Barracuda 7200.11 Serial ATA drives support latching SATA
connectors.
20
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
3.4
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 5 for drive mounting dimensions. Follow these important mounting precau-
tions 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
(101.60)
[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 5. Mounting dimensions
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
21
22
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
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
Barracuda 7200.11 Serial ATA drives incorporate connectors which enable you to hot plug these drives in
accordance with the Serial ATA Revision 2.6 specification. This specification can be downloaded from
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
23
4.2
Serial ATA device plug connector pin definitions
Table 6 summarizes the signals on the Serial ATA interface and power connectors..
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
P8
V5
Power
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
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.
24
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
4.3
Supported ATA commands
The following table lists standard ATA and SATA commands that the drive supports. For a detailed description
of the ATA commands, refer to Information technology -AT Attachment 8 - ATA/ATAPI Command Set (ATA8-
io.org). See “S.M.A.R.T. commands” on page 32 for details and subcommands used in the S.M.A.R.T. imple-
mentation.
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
Read Sectors
29
H
F8
H
H
H
H
H
H
H
H
H
27
20
24
21
40
42
41
10
Read Sectors Extended
Read Sectors Without Retries
Read Verify Sectors
Read Verify Sectors Extended
Read Verify Sectors Without Retries
Recalibrate
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
25
Command name
Security Disable Password
Security Erase Prepare
Security Erase Unit
Security Freeze
Command code (in hex)
F6
F3
F4
F5
F1
F2
H
H
H
H
H
H
H
Security Set Password
Security Unlock
Seek
70
Set Features
EF
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:
00
01
02
03
04
H
H
H
H
H
Unlock:
Freeze Lock:
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
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
B0 / D9
H
H
B0 / D2
H
H
H
H
H
H
H
B0 / D8
H
B0 / D4
H
B0 / D1
H
B0 / D0
H
B0 / D5
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
35
H
CD
H
H
CB
3F
H
Write Multiple
C5
H
Write Multiple Extended
Write Multiple FUA Extended
Write Sectors
39
H
CE
H
30
H
26
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
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 25. 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
0
0C5A
H
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
21
22
0000
Serial number: (20 ASCII characters, 0000 = none)
ASCII
H
Retired
Retired
Obsolete
0000
0400
0000
H
H
H
Firmware revision (8 ASCII character string, padded with blanks to end
of string)
23–26
27–46
47
x.xx
Drive model number: (40 ASCII characters, padded with blanks to end
of string)
(Bits 7–0) Maximum sectors per interrupt on Read multiple and Write
multiple (16)
8010
0000
H
48
Reserved
H
49
Standard Standby timer, IORDY supported and may be disabled
ATA-reserved
2F00
H
H
H
H
H
50
0000
0200
0200
0007
51
PIO data-transfer cycle timing mode
Retired
52
53
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
54
xxxx
xxxx
xxxx
xxxx
H
55
H
H
H
56
57–58
Number of sectors transferred during a Read Multiple or Write Multiple
command
59
xxxx
H
28
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
Word
Description
Value
Total number of user-addressable LBA sectors available
(see Section 2.1 for related information)
*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.
60–61
0FFFFFFFh*
62
63
Retired
0000
H
Multiword DMA active and modes supported (see note following this
table)
xx07
H
64
65
Advanced PIO modes supported (modes 3 and 4 supported)
Minimum multiword DMA transfer cycle time per word (120 nsec)
0003
0078
H
H
Recommended multiword DMA transfer cycle time per word (120
nsec)
66
0078
H
67
Minimum PIO cycle time without IORDY flow control (240 nsec)
Minimum PIO cycle time with IORDY flow control (120 nsec)
ATA-reserved
00F0
H
H
H
H
68
0078
0000
0000
69–74
75
Queue depth
76
Serial ATA capabilities
xxxx
xxxx
xxxx
xxxx
H
77
Reserved for future Serial ATA definition
Serial ATA features supported
Serial ATA features enabled
H
H
H
78
79
80
Major version number
003E
H
81
Minor version number
0000
H
82
Command sets supported
364B
H
83
Command sets supported
7C03
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
0000
H
H
90
Enhanced security erase time
Master password revision code
Hardware reset value (see description following this table)
ATA-reserved
92
FFFE
H
93
xxxx
H
95–99
0000
H
ST31000340AS =1,953,525,168
ST31000640AS =1,953,525,168
ST3750330AS = 1,465,149,168
ST3750630AS = 1,465,149,168
ST3500320AS = 976,773,168
ST3500620AS = 976,773,168
ST3500820AS = 976,773,168
Total number of user-addressable LBA sectors available (see Section
2.1 for related information). These words are required for drives that
support the 48-bit addressing feature. Maximum value:
0000FFFFFFFFFFFFh.
100–103
104–127
ATA-reserved
0000
H
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
29
Word
128
Description
Value
Security status
Seagate-reserved
ATA-reserved
Integrity word
0001
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.
Multiword DMA mode 2 is currently active.
Word 88
1
2
8
9
10
Bit
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
30
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
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).
Report full capacity available
H
F1
H
Note. At power-on, or after a hardware or software reset, the default values of the features are as indi-
cated above.
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
31
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.
32
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
5.0
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Online 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:
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Our Presales Support staff can help you determine which Seagate products are best suited for your specific
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Barracuda 7200.11 Serial ATA Product Manual, Rev. D
33
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.
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34
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
dimensions 21
dissipation 10
Index
A
ACA 17
acceleration 14
acoustics 15
Active 12
AFR 16
E
altitude 13
Electromagnetic Compatibility Directive (89/336/EEC)
Australia/New Zealand Standard AS/NZS3548 1995
enclosures 17
EPRML 1
errors 16
B
buffer 9
ESD 19
EU 16
C
cache 9
capacity 8
certification 16
compatibility 16
connectors 20
cycles 16
F
features 1
G
geometry 8
Gs 14
Cylinders 8
D
H
density 8
heads 8
height 9
humidity 13
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
35
I
IEC950 16
P
power-on-hours 16
interference 17
precautions 19
is 9
ITE 16
Q
K
Korea Ministry of Information and Communication
(MIC) 17
R
L
latency 9
length 9
M
maintenance 16
master/slave 2
MIC 17
mounting 21
MTBF 16
N
noise 12
Recalibrate 25
Reliability 16
O
operating 10
RF 15
36
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
38
Barracuda 7200.11 Serial ATA Product Manual, Rev. D
Seagate Technology LLC
920 Disc Drive, Scotts Valley, California 95066-4544, USA
Publication Number: 100452348, Rev. D, Printed in U.S.A.
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