Seagate Barracuda ST3120023AS User manual

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Barracuda Serial ATAV Family
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ST3120023AS
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ST380023AS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST360015AS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Manual,Volume 1
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Barracuda Serial ATAV Family
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST3120023AS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST380023AS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST360015AS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Manual,Volume 1
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©2001, 2002 Seagate Technology LLC All rights reserved
Publication number: 100221381, Rev. A
November 2002
Seagate, Seagate Technology, and the Seagate logo are either regis-
tered trademarks or trademarks of Seagate Technology LLC. Barra-
cuda, SeaFAX, SeaFONE, SeaShell, SeaShield, and SeaTDD are
either registered trademarks or trademarks of Seagate Technology LLC.
Other product names are registered trademarks or trademarks of their
owners.
Seagate reserves the right to change, without notice, product offerings
or specifications. No part of this publication may be reproduced in any
form without written permission ofSeagate Technology LLC.

Revision status summary sheet
Revision Date Writer/PLM Sheets Affected
Rev. A 11/01/02 L. Newman/Eric Wu All.

Barracuda Serial ATA V Product Manual, Rev. A v
Contents
1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 About the serial ATA interface. . . . . . . . . . . . . . . . . . . . . 1
1.2 Key features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Specification summary table . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Physical organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5 Recording and interface technology . . . . . . . . . . . . . . . . 7
2.6 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.7 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.8 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.9 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.9.1 Power consumption . . . . . . . . . . . . . . . . . . . . . 9
2.9.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . 12
2.9.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . 12
2.9.4 Power-management modes. . . . . . . . . . . . . . 12
2.10 Environmental specifications . . . . . . . . . . . . . . . . . . . . . 13
2.10.1 Ambient temperature . . . . . . . . . . . . . . . . . . . 13
2.10.2 Temperature gradient. . . . . . . . . . . . . . . . . . . 14
2.10.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.10.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.10.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.10.6 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.11 Drive acoustics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.12 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . 16
2.13 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.14 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.14.1 Safety certification . . . . . . . . . . . . . . . . . . . . . 17
2.14.2 Electromagnetic compatibility. . . . . . . . . . . . . 17
2.14.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . 18
3.0 Configuring and mounting the drive. . . . . . . . . . . . . . . . . . . . 21
3.1 Handling and static-discharge precautions . . . . . . . . . . 21
3.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.3 Serial ATA cables and connectors. . . . . . . . . . . . . . . . . 22
3.4 Drive mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.0 Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.1 Serial ATA device plug connector pin definitions. . . . . . 26
4.2 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . 28

vi Barracuda Serial ATA V Product Manual, Rev. A
4.2.1 Identify Device command . . . . . . . . . . . . . . . . 30
4.2.2 Set Features command. . . . . . . . . . . . . . . . . . 35
4.2.3 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . 37
5.0 Seagate Technology support services . . . . . . . . . . . . . . . . . . 39

Barracuda Serial ATA V Product Manual, Rev. A vii
List of Figures
Figure 1. Barracuda Serial ATA V disc drive. . . . . . . . . . . . . . . . . . 2
Figure 2. Typical 5V startup and operation current profile . . . . . . 11
Figure 3. Typical 12V startup and operation current profile . . . . . 11
Figure 4. Serial ATA connectors. . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 5. SATA cabling with separate power and signal
attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 6. SATA cabling with combined power and signal
attachment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 7. Mounting dimensions—top, side and end view . . . . . . . 24

Barracuda Serial ATA V Product Manual, Rev. A 1
1.0 Introduction
This manual describes the functional, mechanical and interface specifica-
tions for ST3120023AS, ST380023AS, and ST360015AS serial ATA inter-
face drives.
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 jumpers 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 provid-
ing 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 configu-
ration 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 environ-
ment 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 environ-
ment.
The serial ATA host adapter and drive share the function of emulating parallel
ATA device behavior to provide backward compatibility with existing host sys-
tems 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 con-
tents of the traditional device registers, referred to as the Shadow Register
Block. All serial ATA devices behave like Device 0 devices. For additional

2 Barracuda Serial ATA V Product Manual, Rev. A
information about how serial ATA emulates parallel ATA, refer to the “Serial
ATA: High Speed Serialized AT Attachment” specification. The specification
can be downloaded from http://www.serialata.com.
1.2 Key features
These drives provide the following key features:
•7,200 RPM spindle speed and 8 Mbyte buffer combine for superior desk-
top performance.
•High instantaneous (burst) data-transfer rates (up to 150 Mbytes per sec-
ond).
•Giant magnetoresistive (GMR) recording heads and EPRML technology,
which provide the drives with increased areal density.
• State-of-the-art cache and on-the-fly error-correction algorithms.
•Full-track multiple-sector transfer capability without local processor inter-
vention.
• Quiet operation.
• 350 Gs nonoperating shock.
•The innovative, shock-absorbing SeaShield
®
cover protects the drive
against electrostatic discharge (ESD) and other handling damage. It also
includes installation instructions and jumper settings.
•SeaTools diagnostic software performs a drive self-test that eliminates
unnecessary drive returns.
•The 3D Defense System™, which includes Drive Defense, Data Defense
and Diagnostic Defense, offers the industry’s most comprehensive protec-
tion for disc drives.
• Support for S.M.A.R.T.drive monitoring and reporting.
• Support for Read Multiple and Write Multiple commands.
Figure 1. Barracuda Serial ATA V disc drive

Barracuda Serial ATA V Product Manual, Rev. A 3
2.0 Drive specifications
Unless otherwise noted, all specifications are measured under ambient con-
ditions, at 25˚C, and nominal power. For convenience, the phrases the drive
and this drive are used throughout this manual to indicate the ST3120023AS,
ST380023AS and ST360015AS models.
2.1 Specification summary table
The specifications listed in this table are for quick reference. For details on
specification measurement or definition, see the appropriate section of this
manual.
Table 1: Drive specifications
Drive specification ST3120023AS ST380023AS ST360015AS
Formatted Gbytes
(512 bytes/sector) 120 80 60
Guaranteed sectors 234,441,648 156,301,488 117,231,408
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Physical read/write heads 4 3 2
Discs 2 2 1
Recording density in BPI
(bits/inch max) 542,000
Track density TPI
(tracks/inch max) 78,000
Areal density
(Mbits/inch
2
max) 42,200
Spindle speed (RPM) 7,200
Max.Internal transfer rate
(Mbits/sec max) 570
Sustained transfer rate
(Mbytes/sec) 27 to 44
I/O data transfer rate
(Mbytes/sec max) 150

4 Barracuda Serial ATA V Product Manual, Rev. A
ATA data-transfer modes
supported SATA 1.0 PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–5
Cache buffer 8 Mbytes
Height (mm max) 26.1
Width (mm max) 101.85
Length (mm max) 147.0
Weight (typical) 635 grams (1.4 lb)
Average latency (msec) 4.16
Power-on to ready
(typical) 10 sec
Standby to ready (typical) 10 sec
Startup current (typical)
12V (peak) 2.8 amps
Track-to-track seek time
(msec typical) 1.0 (read), 1.2 (write)
Average seek time
( typical) 9.4 msec 9.0 msec
Average seek, read
(typical) 9.4 msec 9.0 msec
Average seek, write
(typical) 10.5 msec 10.0 msec
Seek power (typical) 13.5 watts
Operating power
(typical) 13 watts
Idle mode (typical) 9.5 watts
Standby mode 1.8 watts
Sleep mode 1.8 watts
Voltage tolerance
(including noise) 5V ± 5% 12V ± 10%
Ambient temperature 0˚to 60˚C (op.), –40˚to 70˚C (nonop.)
Table 1: Drive specifications
Drive specification ST3120023AS ST380023AS ST360015AS

Barracuda Serial ATA V Product Manual, Rev. A 5
*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
.
Temperature gradient
(˚C per hour max) 20˚C (op.) 30˚C (nonop.)
Relative humidity
(op. and nonop.) 5% to 90% (op.) 5% to 95% (nonop.)
Relative humidity gradient 30% per hour max
Wet bulb temperature
(˚C max) 30 (op.), 40 (nonop.)
Altitude, operating –198.12 m to 3,048 m
(–650 ft to 10,000
+
ft)
Altitude, nonoperating
(meters below mean sea
level, max)
–198.12 m to 12,192 m
(–650 ft to 40,000
+
ft)
Shock, operating
(Gs max at 2 msec) 63
Shock, nonoperating
(Gs max at 2 msec) 350 Gs
Vibration, operating 0.5 Gs (0 to peak, 22–350 Hz)
Vibration, nonoperating 5 Gs (0 to peak, 22–350 Hz)
Drive acoustics
Sound power (bels)
Idle*
Quiet seek
Performance seek
2.8 (typical)
3.0 (max)
2.8 (typical)
3.0 (max)
3.3 (typical)
3.6 (max)
2.1 (typ)
<2.5 (max)
2.4 (typ)
2.8 (max)
3.0 (typical)
3.4 (max)
Nonrecoverable read
errors 1 per 10
14
bits read
Mean time between fail-
ures (power-on hours) 600,000
Contact start-stop cycles
(25˚C, 40% relative
humidity)
50,000
SeaShield Yes
Table 1: Drive specifications
Drive specification ST3120023AS ST380023AS ST360015AS

6 Barracuda Serial ATA V Product Manual, Rev. A
2.2 Formatted capacity
2.3 Default logical geometry
LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consec-
utively numbered from 0 to n–1, where n is the number of guaranteed sectors
as defined above .
Drive model Formatted Gbytes Guaranteed
sectors Bytes per sector
ST3120023AS 120 234,441,648 512
ST380023AS 80 156,301,488 512
ST360015AS 60 117,231,408 512
Cylinders Read/write heads Sectors per track
ST3120023AS 16,383 16 63
ST380023AS 16,383 16 63
ST360015AS 16,383 16 63

Barracuda Serial ATA V Product Manual, Rev. A 7
2.4 Physical organization
2.5 Recording and interface technology
2.6 Physical characteristics
Drive model Read/write heads Number of discs
ST3120023AS 4 2
ST380023AS 3 2
ST360015AS 2 1
Interface Serial ATA (SATA)
Recording method 16/17 EPRML
Recording density BPI (bits/inch max) 542,000
Track density TPI (tracks/inch max) 78,000
Areal density (Mbits/inch
2
max) 42,200
Spindle speed (RPM) ( ± 0.2%) 7,200
Maximum Internal transfer rate (Mbits/sec) 570
Sustained transfer rate (Mbytes/sec) 27 to 44
I/O data-transfer rate (Mbytes/sec max) 16.6 (PIO mode 4)
100 (Ultra DMA mode 5)
150 (SATA 1.0)
Interleave 1:1
Cache buffer 8 Mbytes
Drive specification
Maximum height(mm)
(inches) 26.1 1.028
Maximum width(mm)
(inches) 101.85 4.01
Maximum length(mm)
(inches) 147.0 5.787
Typical weight(grams)
(pounds) 635 1.40

8 Barracuda Serial ATA V Product Manual, Rev. A
2.7 Seek time
Seek measurements are taken with nominal power at 25˚C ambient temper-
ature. 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.
Note. These drives are designed to consistently meet the seek times repre-
sented 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.
2.8 Start/stop times
2.9 Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power
connector. See Figures 5 and 6 on page 23.
Table 2: Typical seek times
Typical seek times (msec) Read Write
Track-to-track 1.0 1.2
Average
1 disc
2 disc 9.4 9.0 10.5 10.0
Average latency: 4.16 4.16
Power-on to Ready (sec) 10 (max)
Standby to Ready (sec) 10 (max)
Ready to spindle stop (sec) 10 (max)

Barracuda Serial ATA V Product Manual, Rev. A 9
2.9.1 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 nomi-
nal conditions, using 5.0V and 12.0V input voltage at 25˚C ambient tempera-
ture.
• 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 opera-
tion.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 infor-
mation.
• 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 elec-
tronics 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.

10 Barracuda Serial ATA V Product Manual, Rev. A
*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
.
Table 3: DC power requirements
Power dissipation
(watts, ST3120023AS) Average (watts, 25˚C) 5V typ amps 12V typ amps
Spinup — — 2.8 (peak)
Idle 7.5 0.74 0.32
Idle* (with offline activity) 9.5 0.74 0.48
Operating 40% r/w.
40% seek, 20% inop. 13 0.74 0.79
Seeking 13.5 0.73 0.82
Standby 1.8 0.34 0.01
Sleep 1.8 0.34 0.01