seagate BARRACUDA ATA INSTALLATION GUIDE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Barracuda ATA Family

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST328040A, ST327240A, ST320430A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST313620A, ST310220A, ST36810A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ultra ATA Interface Drives

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product Manual

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Barracuda ATA Family

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST328040A, ST327240A, ST320430A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST313620A, ST310220A, ST36810A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ultra ATA Interface Drives

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product Manual

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

 1999 Seagate Technology, Inc. All rights reserved
Publication Number: 20400144-001, Rev. B, December 1999
Seagate, Seagate Technology, the Seagate logo and Barracuda are

registered trademarks of Seagate Technology, Inc. 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 fro m Seagate Technology, Inc.

Barracuda ATA Family Product Manual, Rev. B iii

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specification summary table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1.1 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Recording and interface technology . . . . . . . . . . . . . . . . . . . . 6

1.4 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.7 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.7.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.7.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.7.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.7.4 Power-management modes . . . . . . . . . . . . . . . . . . . . . 10

1.8 Environmental tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.8.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.8.2 Temperature gradient . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.8.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.8.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.8.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.8.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.9 Drive acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.10 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . 14

1.11 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.12 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.12.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.12.2 Electromagnetic compatibility . . . . . . . . . . . . . . . . . . . 14

iv Barracuda ATA Family Product Manual, Rev. B

1.12.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . 17

2.1 Handling and static-discharge precautions . . . . . . . . . . . . . . 17

2.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.2.1 Master/slave configuration . . . . . . . . . . . . . . . . . . . . . . 18

2.2.2 Cable-select option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.2.3 Alternate capacity jumper . . . . . . . . . . . . . . . . . . . . . . . 19

2.2.4 Ultra ATA/66 cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.3 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.1 ATA interface signals and connector pins . . . . . . . . . . . . . . 21

3.1.1 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . 23

3.1.2 Identify Drive command . . . . . . . . . . . . . . . . . . . . . . . . 24

3.1.3 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.1.4 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . 30

Barracuda ATA Family Product Manual, Rev. B v

Figures

Figure 1. Typical startup and operation current profile . . . . . . . . . . . . 9

Figure 2. Master/slave jumper settings . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 3. Mounting dimensions—top, side and end view . . . . . . . . . 20

Figure 4. I/O pins and supported ATA signals. . . . . . . . . . . . . . . . . . 22

vi Barracuda ATA Family Product Manual, Rev. B

Barracuda ATA Family Product Manual, Rev. B 1

Introduction

This manual describes the functional, mechanical and interface specifi­cations for the ST328040A, ST327240A, ST320430A, ST313620A,
ST310220A, and the ST36810A. These drives provide the following key
features:

Low power consumption

•

Quiet operation

•

High instantaneous (burst) data-transfer rates (up to 66.6 Mbytes per

•

second) using Ultra DMA mode 4
7,200-RPM and 512-Kbyte buffer combine for superior desktop per-

•

formance
300 Gs nonoperating shock

•

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

•

intervention
Support for S.M.A.R.T. drive monitoring and reporting

•

Support for Read Multiple and Write Multiple commands

•

Support for autodetection of master/slave drives that use cable select

•

(CSEL)

2 Barracuda ATA Family Product Manual, Rev. B

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.

Drive Specification ST328040A

Guaranteed Mbytes

6

bytes)

(×10
Guaranteed sectors 55,704,096

Bytes per sector 512
Default sectors per

track 63
Default read/write

heads
Default cylinders 16,383 16,383 16,383 16,383 14,123
Physical read/write

heads 86432
Discs 43221
Recording density

KBPI (bits /inch max) 305
Track density

TPI (tracks/inch) 16,420
Areal density

(Mbits/inch
Spindle speed

(RPM) 7,200
Internal data-trans-

fer rate (Mbits/sec
max)

I/O data-transfer
rate (Mbytes/sec­max)

ATA data-transfer­modes supported

Cache buffer
(Kbytes) 512

Height (mm max) 26.1

2

max) 5,100

ST327270A

28,520
27,333

53,385,552

16 16 16 16 15

ST320430A ST313620A ST310220A ST36810A

20,520 13,666 10,242 6,833

40,079,088 26,692,776 20,005,650 13,346,235

323

66.6

PIO modes 0–4

Multiword DMA modes 0–2

Ultra DMA modes 0–4

Barracuda ATA Family Product Manual, Rev. B 3

Drive Specification ST328040A

ST327270A

Width (mm max) 102
Length (mm max) 147.0
Weight (typical) 550 grams (1.2 lb)
Average latency

(msec) 4.16 msec
Power-on to ready

(sec typical) 12 sec
Standby to ready

(sec typical) 12 sec
Startup current

(typical) 12V (peak) 2.2 amps
Track-to-track seek

time (msec typical) 0.9
Average seek time

(read, msec typical) 8.0 7.6
Full-stroke seek

time (msec typical) 14.5 14.2
Seek power

(typical) 11.9 watts
Read/Write power

(typical) 8.5 watts 7.5 watts
Idle mode

(typical) 7.5 watts 6.8 watts
Standby mode

(typical) 1.2 watts
Sleep mode (typical) 1.0 watts
Voltage tolerance

(including noise)
Ambient tempera-

ture 0° to 55°C (op.), –40° to 70°C (nonop.)
Temperature gradi-

ent (°C per hour­max) 20°C

Relative humidity
(op. and nonop.)

Relative humidity
gradient 30% per hour max

ST320430A ST313620A ST310220A ST36810A

5V ± 5% – 0.7 amps max

12V ± 10% – 2.4 amps max

8% to 80% (op.)

5% to 90% (nonop.)

4 Barracuda ATA Family Product Manual, Rev. B

Drive Specification ST328040A

ST327270A

Wet bulb tempera­ture (°C max) 29.4 (op.), 40.0 (nonop.)

Altitude, operating –122 m to 3,048 m (–400 ft to 10,000
Altitude (meters be-

low mean sea level,
max)

Shock, operating
(Gs max at 2 msec) 63

Shock, nonoperat­ing (Gs max at 2
msec) 300 Gs

Vibration, operating 0.5 Gs (0 to peak, 5–300 Hz)
Vibration,

nonoperating 5 Gs (0 to peak, 5–300 Hz)
Drive acoustics

Sound power (Bels)
Idle mode

Seek mode
Nonrecoverable

read errors 1 per 10
Mean time between

failures (power-on
hours) 500,000

Contact start-stop
cycles (25°C, 40%
relative humidity) 50,000

Service life (years) 5

ST320430A ST313620A ST310220A ST36810A

–122 m to 12,192 m (–400 ft to 40,000

3.5 (typical), 3.9 (max)

4.0 (typical), 4.3 (max)

14

bits read

+

+

ft)

ft)

Barracuda ATA Family Product Manual, Rev. B 5

1.0 Drive specifications

Unless otherwise noted, all specifications are measured under ambient
conditions, at 25 °C, and no min al power. For convenie nce, the phrases

the drive

ST328040A, ST327240A, ST320430A, ST313620A, ST310220A and
the ST36810A.

1.1 Formatted capacity

and

this drive

are used throughout this manu al to indi cate the

Drive Model Guaranteed Mbytes

(1 Mbyte = 10

ST328040A
ST327240A
ST320430A
ST313620A
ST310220A
ST36810A

6

bytes)

28,520 55,385,552 512
27,333 53,704,096 512
20,520 40,079,088 512
13,666 26,692,776 512
10,242 20,005,650 512

6,833 13,346,235 512

Guaranteed

sectors

Bytes per

sector

1.1.1 Default logical geometry

CHS Mode Cylinders Read/Write heads Sectors per track

ST328040A 16,383 16 63
ST327240A 16,383 16 63
ST320430A 16,383 16 63
ST313620A 16,383 16 63
ST310220A 16,383 16 63

ST36810A 14,123 15 63

LBA Mode

When addressing either drive in LBA mode, all blocks (sectors) are
consecutively numbered from 0 to
guaranteed sectors as defined above

n–1,

.

where

n is

the number of

6 Barracuda ATA Family Product Manual, Rev. B

1.2 Physical organization

Drive Model Read/Write heads (GMR) Number of discs

ST328040A/ST327240A 8 4

ST320430A 6 3
ST313620A 4 2
ST310220A 3 2

ST36810A 2 1

1.3 Recording and interface technology

Interface ATA
Recording method 16/17 EPRML
Recording density KBPI (bits/inch) 305
Track density TPI (tracks/inch) 16,420

2

Areal density (Mbits/inch
Spindle speed (RPM) (± 0.2%) 7,200

max) 5,100

Internal data-transfer rate
(Mbits/sec max) 323

I/O data-transfer rate
(Mbytes/sec max)

16.6 (PIO mode 4)

66.6 (Ultra DMA mode 4)
Interleave 1:1
Cache buffer (Kbytes) 512

1.4 Physical characteristics

Drive Specification ST328040A, ST327240A, ST320430A,

ST313620A, ST310220A, ST36810A

Maximum height (mm)

(inches)

Maximum width (mm)

(inches)

26.1

1.028

101.8

4.020

Barracuda ATA Family Product Manual, Rev. B 7

Maximum length (mm)

(inches)

Typical weight (grams)
(pounds)

147.0

5.78
550

1.2

1.5 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.

•

Full-stroke seek time is one-half the time needed to seek from the first
data cylinder to the maximum data cylind er an d b ac k t o th e fi rst dat a
cylinder. The full-stroke typic al v al ue is determined by averaging 100
full-stroke seeks in both directions.

Typ ical seek times (mse c) Read Write

T rack-to-track 0.9 1.6
Av erage *8.0/7.6 9.1
Full-stroke *14.5/14.2 *17.5/16.9
Av erage lat ency: 4 .16 msec — —
*8.0 av erage read, 14.5 full -stroke read and 1 7.5 full-stroke write appl ies

to the ST328040A and ST327240A only.

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.

1.6 Start/stop times

Power-on to Ready (sec) 12 (typical)
Standby to Ready (sec) 12 (typical)
Ready to spindle stop (sec) 11 (typical)

8 Barracuda ATA Family Product Manual, Rev. B

1.7 Power specifications

The drive receives DC power (+5V or +12V) through a four-pin standard
drive power connector.

1.7.1 Power consumption

Power requirements for the drives are listed in the table on pag e 9.
Typical power measurements are based on an average of drives tested,
under nominal conditions, using 5.0V 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 o n the disc surface an d does not execute a read or
write operation. S ervo e lectron ics are ac tive. Seek mode p ower 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 trac k, based on a
16-sector write follow ed 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 pe rcent
drive inactive.

Idle mode power

•

Idle mode power is measured with the drive up to spee d, with ser vo
electronics active and with the heads in a random track location.

Standby mode

•

During Standby mode , the drive a ccepts comm ands, but the drive is
not spinning, and the servo a nd read/write electronic s are in p ower­down mode.

Barracuda ATA Family Product Manual, Rev. B 9

Models ST328040A and ST327270A Typical Amps RMS

Power Mode

Spinup — — 2.2 (peak)
Seeking (Random,

no read/write) 11.9 0.340 0.850
Operating (read/write) 8.5 0.485 0.505
Idle 7.5 0.310 0.496
Standby 1.2 0.194 0.019
Sleep 1.0 0.128 0.030

Typical Watts RMS

Models ST320430A, ST313620A,

5V 12V

Typical Amps RMS

ST310220A and ST36810A

Power Mode Typical Watts RMS 5V 12V

Spinup — — 2.2 (peak)
Seeking (Random,

no read/write) 11.9 0.340 0.850
Operating (read/write) 7.5 0.485 0.422
Idle 6.8 0.310 0.4 40
Standby 1.2 0.194 0.019
Sleep 1.0 0.128 0.0 30

1.7.1.1 Typical current profile

2.5

2.0

1.5

1.0

Current (mA)

0.5

0

012345678910

Time (seconds)

Figure 1. Typical startup and operation current profile

10 Barracuda ATA Family Product Manual, Rev. B

1.7.2 Conducted noise

Input noise ripple i s mea su re d a t the host system powe r su ppl y ac ross
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, th e dri ve is expec ted to op er ate with a ma xi mum
of 100 mV peak-to-peak square-wave injected noise at up to 10 MHz.

Note.

Equivalent resis tance is calcu lated by dividing the nomina l volt­age by the typical RMS read/write current.

1.7.3 Voltage tolerance

Voltage tolerance (incl udi ng noi se ):
5V ± 5% 0.7 amps max

12V ± 10% 2.4 amps max

1.7.4 Power-management modes

The drive provides programmable power management to provide great­er energy efficiency . In m ost syst ems, you can control power mana ge­ment through the system setup program. The drive features the following
power-management modes:

Power Modes Heads Spindle Buffer

Active Tracking Rotating Enabled
Idle Tracking Rotating Enabled
Standby Parked Stopped Enabled
Sleep Parked Stopped Disabled

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.

Barracuda ATA Family Product Manual, Rev. B 11

Standby mode

•

The drive enters Standby mode when the host sends a Standby
Immediate command. If the hos t has set th e standb y timer, the drive
can also enter Standby mo de automatical ly after the drive has been
inactive for a specifia ble 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 receivi ng a Sleep co mmand from
the host. In Sle ep mode, the drive buffer is disabl ed, the heads are
parked and the spindle is at res t. The drive l eaves Sleep m ode after
it receives a Hard Reset or Soft Reset from the host. After receiving a
reset, the drive exits Sleep mode and enters Active 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 s tandby timer reaches zero b efore any dri ve
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.

1.8 Environmental tolerances

1.8.1 Ambient temperature

Ambient temperature i s def ined as the temperatur e o f t he env ir on men t
immediately surrounding the drive. Actual drive case temperature should
not exceed
ommended measurement locations are shown in Figure 3 on page 20.

Above 1,000 feet (305 m eters), the maximum temperat ure is derated
linearly to 112°F (44°C) at 10,000 feet (3,048 meters).

Operating 0° to 55°C (32° to 131°F)
Nonoperating –40° to 70°C (–40° to 158°F)

69°C (156°F) within the operating ambient conditions. Rec-

12 Barracuda ATA Family Product Manual, Rev. B

1.8.2 Temperature gradient

Operating/Nonoperating 20°C/hr (36°F/hour) max,

without condensation

1.8.3 Humidity

1.8.3.1 Relative Hum idity

Operating 8% to 80% noncondensing (30% per hour max)
Nonoperating 5% to 90% noncondensing (30% per hour max)

1.8.3.2 Wet bulb temperature

Operating 29.4°C (84°F) max
Nonoperating 40.0°C (104°F) max

1.8.4 Altitude

Operating –122 m to 3,048 m (–400 ft to 10,000+ ft)
Nonoperating –122 m to 12,192 m (–400 ft to 40,000+ ft)

1.8.5 Shock

All shock specifications assume that the drive is mounted securely with
the input shock appli ed at the drive mounting screws. Sh ock may be
applied in the X, Y or Z axis.

1.8.5.1 Operating shock

These drives comply with the performance levels specified in this docu­ment when subjected to a maximum op erating shock of 63 Gs (ba sed
on half-sine shock p ulses of 2 msec). Sh ocks should not be repe ated
more than two times per second.

1.8.5.2 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 ATA Family Product Manual, Rev. B 13

1.8.6 Vibration

All vibration speci fications assume that the drive is mounted securely
with the input vibration app lied at the driv e mounting screws. Vib ration
may be applied in the X, Y or Z axis.

1.8.6.1 Operating vibration

The following table lists the maximum vibration levels that the dr ive may expe­rience while meeting the per formance standards specifie d in this document .

5–22 Hz 0.010-inch displacement (zero to peak)
22–300 Hz 0.5 Gs acceleration (zero to peak)

1.8.6.2 Nonoperating vibration

The following table lis ts the maximum nonoperating v ibration that the
drive may experience without incurring physical damage or degradation
in performance when subsequently put into operation.

5–22 Hz 0.10-inch displacement (zero to peak)
22–300 Hz 5.0 Gs acceleration (zero to peak)

1.9 Drive acoustics

Drive acoustics are measured as overall A-weighted acoustic sound
power levels (no pure tones). All measurements are generally consistent
with ISO document 7779. Sound power measurements were taken
under essentially free-field conditions over a reflecting plane. For all
tests, the drive was oriented with the cover facing upward.

Note.

For seek mode tests, the drive was pl aced 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)

Acoustic mode Idle mode Seek mode

Sound power (bels) 3.5 (typ) 3.9 (max) 4.0 (typ) 4.3 (max)

1.10 Electromagnetic susceptibility

The drive operates without errors when subjected to the following:
Radiated noise ≤ 3 volt/meter, 30 Hz to 500 MHz

14 Barracuda ATA Family Product Manual, Rev. B

Electrostatic discharge * ≤ 10 KVolts
Magnetic field strength ≤ 5 Gauss

* Electrostatic discharge susceptibility is measured with the drive

mounted in a representative computer system (mounted to a
ground plane with an earth ground). Discharges are applied to the
bezel or other external surfaces on the ground plane.

1.11 Reliability

14

Nonrecoverable read errors 1 per 10
Mean time between failures 500,000 power-on hours

(nominal power, 25°C ambient tem­perature)

Contact start-stop cycles 50,000 cycles

(at nominal voltage and temperature,
with 60 cycles per hour and a 50%
duty cycle)

Preventive maintenance None required

bits read, max

1.12 Agency certification

1.12.1 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.

1.12.2 Electromagnetic compatibility

Hard drives that display the CE marking comply with European Unio n
requirements specified in Electromagnetic Compatibility Directives.
Testing is performed to standards EN 50082-1 and EN 55022-B.

Seagate uses an independent laboratory to confirm compliance with the
EC directives speci fied in t he previous p aragrap h. Drives are tested in
representative end-user systems. Although CE-marked Seagate drives
comply with the dir ectives when used in the t est systems, we cannot
guarantee that all sy stems will c omply with the d irectives. Th e 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 manuf acturers and system integrato rs should confirm

Barracuda ATA Family Product Manual, Rev. B 15

EMC compliance and provide CE marking for their products.

Australian CE-Tick (N176)

If these models have the C-Tick marking, they comply with the Australia/
New Zealand Standard AS/NZS 3548 1995 and meet the Electrom ag­netic Compatibility (EMC) Framework requirements of Australia’s Spec­trum Management Agency (SMA).

1.12.3 FCC verification

These drives are intended to be contained solely within a personal
computer or similar enclos ure (n ot attac hed as a n exte rnal dev ice ). 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, Inc. has tested this devi ce in enclosures as de­scribed above to ensure th at the total assem bly (enclo sure, disc drive,
motherboard, power supply, etc.) does comply with the limits for a Class
B computing devi ce, pursuant to Subp art J, Part 15 of the FCC rules.
Operation with noncertified as sembl ies is likel y to resu lt in interfe rence
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 desig ned to provide reasonable protection against
such interference in a residential installation. However, there is no
guarantee that interfer ence will not occur in a particu lar 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 s hould consult your de aler or an experienced radio/
television technician for additional suggestions. You may find helpful the
following booklet pr epared by the Federal Communications Com mis-

How to Identify and Resolve Radi o-Television Interfer ence Prob-

sion:

16 Barracuda ATA Family Product Manual, Rev. B

lems

. This booklet is available from the Supe rintendent of Doc uments,
U.S. Government Printing Office, Washington, DC 20402. Refer to pub­lication number 004-000-00345-4.

Barracuda ATA Family Product Manual, Rev. B 17

2.0 Configuring and mounting the drive

This section contain s th e s pec if ic ati ons an d in st ru cti on s fo r c on fig ur in g
and mounting the drive.

2.1 Handling and static-discharge precautions

After unpacking, and before installation, the drive may be exposed to
potential handling and electrostatic discharge (ESD) hazards. Observe the
following standard handling and static-discharge precautions:

Caution:

Keep the drive in its static-shielded bag until you are ready to complete

•

the installation. Do not at tach any c ables t o the driv e while it is i n its
static-shielded bag.

Before handling the drive, put on a grounde d wrist strap, or ground

•

yourself frequentl y by touching the metal chas sis of a com puter 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

•

The drive is extremely fragile—handle it with care. Do not press down

•

on the drive top cover.
Always rest the drive on a padd ed, anti static sur face unt il 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 factory­installed labels contain information needed to service the drive. Other
labels are used to seal out dirt and contamination.

only

.

18 Barracuda ATA Family Product Manual, Rev. B

2.2 Jumper settings

2.2.1 Master/slave configuration

The options jumper block shown in Figure 2 is used to configure the drive
for operation. It is the 6-pin dual header between the interface connector
and the power connecto r. Use the following settings to con figure the
drive as a master or a slave.

Master or single drive

or single-drive operation with a jumper set on pins 7 and 8.

Drive as slave
Drive as master with a non-ATA-compatible slave

Use this jumper setting
no jumpers installed.

. Remove all jumpers.

. The drive is configured at the factory for a master

.

only

if the drive does not work as a master with

Options jumper block

Drive is slave

Master or single drive

Master with non ATA­compatible slave

Cable select

Alternate capacity
(AC)

1753

684

Figure 2. Master/slave jumper settings

2

Circuit Board

Barracuda ATA Family Product Manual, Rev. B 19

2.2.2 Cable-select option

Computers that use cable-select determine the master and slave drives
by selecting or dese lecting pin 2 8, CSEL, on th e interface bu s. Master
and slave drives are determined by their physical position on the cable.
To enable cable select, set a jumper on pins 5 and 6 as shown in Figure
2 on page 18. Refer to your computer manual to determine whether your
computer supports this option.

2.2.3 Alternate capacity jumper

Some older computers may “hang” if their BIOS detects a hard drive that
has more than 4,092 cylinders at startup. To eliminate this problem, the
drive includes a cap acity-limiting jumper which s ets the drive ’s default
translation geometr y to 4,092 cyl inders. Thi s limits the dr ive’s cap acity
to 2.1 Gbytes unless third-party software is used.

2.2.4 Ultra ATA/66 cable

An 80-conductor 40-pin cable is required to run Ultra DMA mode 3 and

4. This cable uses even-numbered conductors connected to the ground
pins to improve signal integrity.

Note.

The drive supports both host and drive cable detection. The host
detects the 80-conduc tor cabl e by sampl ing pi n 34, CBL ID–, on
the interface bus. The drive detects the 80-conductor cable by
sensing a capacito r at the h ost si de thr ough t he CBLI D– sig nal.
The result is reported in a Fast Rise Detected bit (b it 1 3 of w or d
93 in the Identify drive parameter block).

2.3 Drive mounting

You can mount the drive in any orientation using four screws in the side­mounting holes or four screws in the bottom-mounting holes. See Figure
4 on page 20 for drive mo unting dimensions. Follow these im portant
mounting precautions when mounting the drive:

•

Allow a minimum clearanc e 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 in serted no more than 0.200 inch (5.58 mm ) into
the bottom mounting holes and no more than 0.14 inch (5.0 mm) into
the side mounting holes.

•

Do not overtighten the mounting screws (maximum torque: 6 inch-lb).

•

Do not use a drive interface cable that is more than 18 inches long.

20 Barracuda ATA Family Product Manual, Rev. B

Note. Dimensions are shown in mm (inches)

94.3± 0.8

[3.71± 0.03]

71.8± 0.8

[2.83± 0.03]

56.5 ± 0.8

[2.23 ± 0.03]

26.10 Max
[1.028]

147.00 Max
[5.787]

3X 6.35 ± 0.31

[0.250 ± 0.012]

Both Sides

Recommended
case temperature
measurement location

5.83 ± 0.38

[0.230 ± 0.015]

27.90 ± 0.27

[1.098 ± 0.011]

41.60 ± 0.33

[1.638 ± 0.013]

101.60 ± 0.33

[4.000 ± 0.013]

3X 6-32 UNC 2B
Max Insertion Depth

0.20 (5.0 mm) Both Sides

9.28 (0.365)

Pin One J2

±

40.77

0.27

±

0.011]

[1.605

44.45 ± 0.33

[1.750 ± 0.013]

4X 6-32 UNC 2B
Max Insertion
Depth 0.22 (5.6 mm)

Pin One J3

[0.125 ± 0.011]

Pin One J4

[3.750 ± 0.014]

3.18 ± 0.27

50.3 (2.00)

±

95.24

101.85 Max

[4.010 Max]

[0.183 ± 0.015]

0.35

Recommended
case temperature
measurement location

4.66± 0.38

Figure 3. Mounting dimensions—top, side and end view

Barracuda ATA Family Product Manual, Rev. B 21

3.0 ATA interface

These drives use the industry-standard ATA task file interface that
supports 16-bit data transfers. It supports ATA programmed input/output
(PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes
0–4. The drive also sup ports the use of the IORDY sig nal to provide
reliable high-speed data transfers.

You can use a da isy-chain ca ble to connect two drives to a single AT
host bus. For detailed info rmati on abou t the ATA interf ace, ref er to the
draft of

NCITS T13 1153D,
dard

3.1 ATA interface signals and connector pins

Figure 4 on page 22 summarizes the signals on the ATA interface
connector that the drive supports. For a detailed des cription of these
signals, refer to the

AT Attachment with Packet Interface Extension (ATA/ATAPI-4),

subsequently referr ed to as the

.

Draft ATA-4 Standard.

Draft ATA-4 Stan-

22 Barracuda ATA Family Product Manual, Rev. B

Drive pin #

10
11
12
13
14
15
16
17
18
19
20
21
22
23

24
25

26
27

28
29
30
31
32
33
34

35
36
37
38
39
40

Signal name

–

1
2
3
4
5
6
7
8
9

Reset

Ground

DD7
DD8
DD6
DD9
DD5

DD10

DD4

DD11

DD3

DD12

DD2

DD13

DD1

DD14

DD0

DD15

Ground

(removed)

DMARQ

Ground
DIOW–

STOP

Ground

DIOR

–

HDMARDY

HSTROBE

Ground
IORDY

DDMARDY–

DSTROBE

CSEL

–

DMACK

Ground

INTRQ

–

IOCS16

DA1

–

PDIAG

CBLID–

DA0
DA2

–

CS0

–

CS1

–

DASP
Ground

–

Host pin # and signal description

1

Hardware Reset

2

Ground

3

Host Data Bus Bit 7

4

Host Data Bus Bit 8

5

Host Data Bus Bit 6

6

Host Data Bus Bit 9

7

Host Data Bus Bit 5

8

Host Data Bus Bit 10

9

Host Data Bus Bit 4

10

Host Data Bus Bit 11

11

Host Data Bus Bit 3

12

Host Data Bus Bit 12

13

Host Data Bus Bit 2

14

Host Data Bus Bit 13

15

Host Data Bus Bit 1

16

Host Data Bus Bit 14

17

Host Data Bus Bit 0

18

Device Data (15:0)

19

Ground
(No Pin)

20
21

DMA Request

22

Ground

23

Device I/O Write:
Stop Ultra DMA Burst

24

Ground

25

Device I/O Read:
Host Ultra DMA Ready:
Host Ultra DMA Data Strobe

26

Ground

27

I/O Channel Ready
Device Ultra DMA Ready
Device Ulta DMA Data Strobe

28

Cable Select

29

DMA Acknowledge

30

Ground

31

Device Interrupt

32

Reserved

33

Host Address Bus Bit 1

34

Passed Diagnostics
Cable Assembly Type Identifier

35

Device Address (2:0)

36

Device Address (2:0)

37

Chip Select (1:0)

38

Chip Select (1:0)

39

Drive Active/Slave Present

40

Ground

Pins 28, 34 and 39 are used for master-slave communication (details shown below).

28
34
39

Drive 0 (master)Drive 1 (slave)

28
34
39

CSEL

PDIAG

DASP–

–

Host

28
34
39

Figure 4. I/O pins and supported ATA signals

Barracuda ATA Family Product Manual, Rev. B 23

3.1.1 Supported ATA commands

The following table lis ts ATA-standard commands that the driv e sup­ports. For a detailed description of the ATA commands, refer to the

ATA-4 Standard.

See Section 3.2.4 on page 30 for details and subcom-

mands used in the S.M.A.R.T. implementation.

Command name Command code (in hex)

ATA-standard commands

Draft

Download Microcode 92
Execute Device Diagnostics 90
Flush Cache E7
Format Track 50
Identify Device EC
Initialize Device Parameters 91
Read Buffer E4
Read DMA C8

H, C9H

Read Multip le C4
Read Sectors 20
Read Verify Sectors 40

H, 21H

H, 41H

Recalibrate 10
Seek 70
Set Features EF
Set Multiple Mode C6

H

H

H

H

H

H

H

H

H

H

H

H

S.M.A.R.T. B0
Write Buffer E8
Write DMA CA

H, CBH

Write Multiple C5
Write Sectors 30

H, 31H

H

H

H

24 Barracuda ATA Family Product Manual, Rev. B

Command name Command code (in hex)

ATA-standard power-management commands

Check Power Mode 98
Idle 97H or E3
Idle Immediate 95H or E1
Sleep 99H or E6
Standby 96H or E2
Standby Immediate 94H or E0

or E5

H

H

H

H

H

H

H

ATA-standard security commands

Security Set Password F1
Security Unlock F2
Security Erase Prepare F3
Security Erase Unit F4
Security Freeze Lock F5
Security Disable Password F6

H

H

H

H

H

H

3.1.2 Identify Drive command

The Identify Drive command (command code ECH) transfer s information
about the drive to the host following power up. The data is organized as
a single 512-byte bl ock of data, whose contents are shown in the tabl e
on page 25. All reserved bits or words should be set to zero. Parameters
listed with an “x” are drive-specific or vary with the state of the drive. See
Section 1 of this manual for default parameter settings.

The following commands contain drive-specific features that may not be
included in the

Draft ATA-4 Standard.

Barracuda ATA Family Product Manual, Rev. B 25

Word Description Value

Configuration information:

•

Bit 15: 0 = ATA; 1 = ATAPI

0

•

Bit 7: removable media

•

Bit 6: removable controller

•

Bit 0: reserved

0C5A

H

1 Number of logical cylinders

2 ATA-reserved
3 Number of logical heads

4 Retired
5 Retired
6 Number of logical sectors per

logical track: 63

7–9 Retired

10–19 Serial number: (20 ASCII

characters, 0000

= none)

H

20 Retired
21 Retired

ST328040A, ST327240A
ST320430A, ST313620A,
ST310220A = 16,383

ST36810A = 14,123

0000

H

ST328040A, ST327240A,
ST320430A, ST313620A,
ST310220A = 16

ST36810A = 15

0000

H

0000

H

003F

H

0000

H

ASCII

0000

H

0400

H

22 Obsolete

23–26 Firmware revision (8 ASCII

character string, padded with
blanks to end of string)

27–46 Drive model number: (40

ASCII characters, padded
with blanks to end of string)

0000

H

x.xx

ST328040A
ST327240A
ST320430A
ST313620A
ST310220A

ST36810A

26 Barracuda ATA Family Product Manual, Rev. B

Word Description Value

47 (Bits 7–0) Maximum sectors

per interrupt on Read multi-

ple and Write multiple (16)
48 Reserved
49 Standard Standby timer,

IORDY supported and may

be disabled
50 ATA-reserved
51 PIO data-transfer cycle

timing mode
52 Retired
53 Words 54–58, 64–70 and 88

are valid
54 Number of current logical

cylinders
55 Number of current logical

heads
56 Number of current logical

sectors per logical track

8010

0000

2F00

0000

0200
0200

0007

xxxx

xxxx

xxxx

H

H

H

H

H

H

H

H

H

H

57–58 Current capacity in sectors

59 Number of sectors trans-

ferred during a Read Multiple

or Write Multiple command

60–61 Total number of user-addres-

sable LBA sectors available

62 Retired
63 Multiword DMA active and

modes supported (see note

following this table)

xxxx

H

xxxx

H

ST328040A = 55,704,096
ST327240A = 53,385,552
ST320430A = 40,079,088
ST313620A = 26,692,776
ST310220A = 20,005,650

ST36810A = 13,346,235

0000

H

07

xx

H

Barracuda ATA Family Product Manual, Rev. B 27

Word Description Value

64 Advanced PIO modes sup-

ported (modes 3 and 4 sup­ported)

65 Minimum multiword DMA

transfer cycle time per word
(120 nsec)

66 Recom men ded mul tiw or d

DMA transfer cycle time per
word (120 nsec)

67 Minimum PIO cycle time

without IORDY flow control
(240 nsec)

68 Minimum PIO cycl e time with

IORDY flow control (120
nsec)

69–74 ATA-reserved

75 Queue depth

76–79 ATA-reserved

80 Major version number

0003

0078

0078

00F0

0078

0000
0000
0000

001E

H

H

H

H

H

H

H

H

H

81 Minor version number
82 Command sets supported
83 Command sets supported
84 Command sets support

extension
85 Command sets enabled
86 Command sets enabled
87 Command sets enable

extension
88 Ultra DMA support and

current mode

(see note following this table)

0000

306B

4001
4000

30

xx

0001
4000

1F

xx

H

H

H

H

H

H

H

H

28 Barracuda ATA Family Product Manual, Rev. B

Word Description Value

89 Security erase time
90 Enhanced security erase

0000
0000

H

H

time

91–92 ATA-reserved

93 Hardware Reset Value

0000
4000

H

H

(see description following
this table)

94–127 ATA-reserved
129–159 Seagate-reserved
160–255 ATA-reserved

0000

xxxx

0000

H

H

H

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 Word 63

0 Multiword DMA mode 0 is supported.
1 Multiword DMA mode 1 is supported.
2 Multiword DMA mode 2 is supported.
8 Multiword DMA mode 0 is currently active.
9 Multiword DMA mode 1 is currently active.
10 Multiword DMA mode 2 is currently active.

Bit Word 88

0 Ultra DMA mode 0 is supported.
1 Ultra DMA mode 1 is supported.
2 Ultra DMA mode 2 is supported.
3 Ultra DMA mode 3 is supported
4 Ultra DMA mode 4 is supported
8 Ultra DMA mode 0 is currently active.

Barracuda ATA Family Product Manual, Rev. B 29

9 Ultra DMA mode 1 is currently active.
10 Ultra DMA mode 2 is currently active.
11 Ultra DMA mode 3 is currently active.
12 Ultra DMA mode 4 is currently active.

Bit Word 93

13 1=80-conductor cable detected, CBLID above V

0=40-conductor cable detected, CBLID below V

IH

IL

3.1.3 Set Features command

This command control s the im pl eme ntat ion of various features that th e
drive supports. When the drive receives this command, it sets BSY,
checks the contents of the Features register, clears BSY and generates
an interrupt. If the value in the register does not represent a feature that
the drive supports, th e command is aborted . Power-on d efault has the
read look-ahead and write caching features enabled. Th e acceptable
values for the Features register are defined as follows:

02
03

H
H

Enable write cache

(default).

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

H

(PIO mode 2).

08

PIO mode 0

H

09

PIO mode 1

H

0A

PIO mode 2

H

0B

PIO mode 3

H

0C

PIO mode 4

H

(default)

20HMultiword DMA mode 0
21

Multiword DMA mode 1

H

22

Multiword DMA mode 2

H

40

Ultra DMA mode 0

H

41

Ultra DMA mode 1

H

30 Barracuda ATA Family Product Manual, Rev. B

42

Ultra DMA mode 2

H

43

Ultra DMA mode 3

H

44

Ultra DMA mode 4

H

55
82
AA

Disable read look-ahead (read cache) feature.

H

Disable write cache.

H

Enable read look-ahead (read cache) feature

H

(default).

Note. At power-on, or after a hardware or software reset, the default

values of the features are as indicated above.

3.1.4 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 monitors predetermined drive attributes
that are suscep tible to degradation over time. If self-monitor ing determines
that a failure is likely, S.M.A.R.T. makes a status report available to the
host. Not all failur es are predi ctable. S.M.A.R. T. predict ability is lim ited to
the attributes the drive can monitor. For more information on S.M.A.R. T.
commands and implementation, see the

This drive is shipped with S.M.A.R.T. features disabled. You must have
a recent BIOS or software package th at s upp orts S.M. A.R. T. to ena bl e
this feature. The table below shows the S.M.A.R.T. command codes that
the drive uses.

Draft ATA-4 Standard.

Code in Features
Register

D0

H

D1

H

D2

H

D3

H

D4

H

D7

H

D8

H

D9

H

DA

H

S.M.A.R.T. Command

S.M.A.R.T. Read Data
Vendor-specific
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
Vendor-specific
S.M.A.R.T. Enable Operations
S.M.A.R.T. Disable Operations
S.M.A.R.T. Return Status

Barracuda ATA Family Product Manual, Rev. B 31

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 ATA Family Product Manual, Rev. B

Barracuda ATA Family Product Manual, Rev. B 33

34 Barracuda ATA Family Product Manual, Rev. B

Seagate Technology, Inc.
920 Disc Drive, Scotts Valley, California 95066, USA

Publication Number: 20400144-001, Rev. B, Printed in USA