Seagate ST3120026AS, ST3160023AS, ST3160827AS, ST3160021AS, ST380013AS User Manual

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0 (0)

Barracuda 7200.7 Serial ATA

ST3200822AS

ST3160827AS

ST3160023AS

ST3160021AS

ST3120827AS

ST3120026AS

ST3120022AS

ST380817AS

ST380013AS

ST380011AS

ST340111AS

ST340014AS

Barracuda 7200.7 Serial ATA

ST3200822AS

ST3160827AS

ST3160023AS

ST3160021AS

ST3120827AS

ST3120026AS

ST3120022AS

ST380817AS

ST380013AS

ST380011AS

ST340111AS

ST340014AS

©2003–2004–2005 Seagate Technology LLC All rights reserved Publication number: 100270024, Rev. N

September 2005

Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. SeaTools, SeaFONE, SeaBOARD, SeaTDD, and the Wave logo 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 of Seagate Technology LLC.

 

 

 

Contents

1.0

Introduction. . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

 

1.1

About the Serial ATA interface

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

 

1.2

Native Command Queuing . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.0

Drive specifications . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1 Specification summary table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.5 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.5.1 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.6 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.7 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.8 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.8.2 Deferred spinup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.8.3 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.8.4 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.8.5 Power-management modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.9 Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.9.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.9.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.9.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.9.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.9.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.9.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.10 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.11 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.12 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.13 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.13.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.13.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.13.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.14 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2.15 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.0

Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

 

3.1

Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

 

3.2

Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

 

3.3

Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20

 

3.4

Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21

4.0

Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

 

4.1

Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

 

4.2

Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24

 

4.3

Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26

 

 

4.3.1

Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28

 

 

4.3.2

Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32

 

 

4.3.3

S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33

5.0 Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

iii

iv

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

List of Figures

Figure 1. Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 2. Typical 12V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 3. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 4. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 5. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

v

1.0Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate Barracuda® 7200.7 Serial ATA model drives:

Table 1:

Barracuda 7200.7 Serial ATA models

 

 

 

 

 

 

 

OEM models

Distribution models

Distribution models

 

not supporting NCQ

supporting NCQ

 

 

 

 

 

 

 

ST3200822AS

ST380013AS [1]

ST3200822AS

ST3160827AS

ST3160023AS [1]

ST380011AS [1]

ST3160023AS

ST3120827AS

 

 

 

 

ST3160021AS [1]

ST340111AS [1]

ST3120026AS

ST380817AS

 

 

 

 

ST3120026AS [1]

ST340014AS [1]

ST380013AS

 

ST3120022AS [1]

 

 

 

 

 

 

 

 

[1]OEM model that may support NCQ

These drives provide the following key features:

7,200 RPM spindle speed

8 Mbyte buffer (ST3200822AS, ST3160827AS, ST3160023AS, ST3120827AS, ST3120026AS, ST380817AS, ST380013AS and ST340111AS models)

2 Mbyte buffer (ST3160021AS, ST3120022AS, ST380011AS, and ST340014AS models)

High instantaneous (burst) data-transfer rates (up to 150 Mbytes per second).

Giant magnetoresistive (GMR) recording heads and EPRML technology, 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.

Quiet operation.

350 Gs nonoperating shock.

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 protection for disc drives.

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

Support for Read Multiple and Write Multiple commands.

Native Command Queing enabled on some models.

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

1

1.1About 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 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 registers, referred to as the Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For additional 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.

1.2Native Command Queuing

Native Command Queuing (NCQ) is among the advanced features introduced in the Serial ATA II: Extensions to Serial ATA 1.0 Specification. NCQ is a powerful technology designed to increase performance and endurance by allowing the drive to internally optimize the execution order of workloads. Intelligent reordering of commands within the drive’s internal command queue helps improve performance of queued workloads by minimizing mechanical positioning latencies on the drive.

Operating systems such as Microsoft Windows and Linux are increasingly taking advantage of multi-threaded software or processor-based Hyper-Threading Technology. These features have a high potential to create workloads where multiple commands are outstanding to the drive at the same time. By utilizing NCQ, the potential disc performance is increased significantly for these workloads.

Native Command Queuing achieves high performance and efficiency through efficient command reordering. In addition, there are three new capabilities that are built into the Serial ATA protocol to enhance NCQ performance: racefree status return, interrupt aggregation, and First-Party DMA.

To learn more about NCQ, go to the Seagate Serial ATA resource site at:

www.seagate.com/products/interface/sata/.

2

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

2.0Drive 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 ST3200822AS, ST3160827AS, ST3160023AS, ST3160021AS, ST3120827AS, ST3120026AS, ST3120022AS, ST380817AS, ST380013AS, ST380011AS, ST340111AS and ST340014AS models.

2.1Specification 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 2:

Drive specifications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ST3160827AS

ST3120827AS

ST380817AS

 

Drive specification

ST3200822AS

ST3160023AS

ST3120026AS

ST380013AS

ST340111AS

 

 

 

ST3160021AS

ST3120022AS

ST380011AS

ST340014AS

 

 

 

 

 

 

Formatted Gbytes (512 bytes/sector)*

200

160

120

80

40

 

 

 

 

 

 

Guaranteed sectors

390,721,968

312,581,808

234,441,648

156,301,488

78,165,360

 

 

 

 

 

 

Bytes per sector

512

 

 

 

 

 

 

 

 

 

 

Default sectors per track

63

 

 

 

 

 

 

 

 

 

 

Default read/write heads

16

 

 

 

 

 

 

 

 

 

 

Default cylinders

16,383

 

 

 

 

 

 

 

 

 

 

Physical read/write heads

4

4

3

2

1

 

 

 

 

 

 

 

Discs

 

2

2

2

1

1

 

 

 

 

 

 

Recording density in BPI (bits/inch max)

671,500

595,000

 

 

 

 

 

 

 

 

 

Track density TPI (tracks/inch max)

98,000

94,600

 

 

 

 

 

 

 

 

 

Areal density (Gbits/inch2 max)

68.5

56.3

 

 

 

Spindle speed (RPM)

7,200

 

 

 

 

 

 

 

 

 

 

Internal transfer rate (Mbytes/sec max)

85.4

 

 

 

 

 

 

 

 

 

 

Sustained transfer rate OD (Mbytes/sec)

58

 

 

 

 

 

 

 

 

 

 

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

150

 

 

 

 

 

 

 

 

 

 

 

 

 

SATA 1.0, SATA II

 

 

 

 

ATA data-transfer modes supported

PIO modes 0–4

 

 

 

 

Multiword DMA modes 0–2

 

 

 

 

 

 

 

 

 

 

Ultra DMA modes 0–6

 

 

 

 

 

 

 

 

 

8 Mbytes: ST3200822AS, ST3160827AS, ST3160023AS, ST3120827AS,

Cache buffer

 

ST3120026AS, ST380817AS, ST380013AS and ST340111AS

 

 

2 Mbytes: ST3160021AS, ST3120022AS, ST380011AS, and ST340014AS

 

 

 

 

 

 

Height (max)

 

26.035 mm (1.028 inches)

 

 

 

 

 

 

 

 

 

Width (max)

 

101.6 mm (4.000 inches)

 

 

 

 

 

 

 

 

 

Length (max)

 

146.99 mm (5.787 inches)

 

 

 

 

 

 

 

 

 

Weight (typical)

635 grams (1.4 lb)

 

 

 

 

 

 

 

 

 

 

 

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

3

Table 2:

Drive specifications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ST3160827AS

 

ST3120827AS

ST380817AS

 

Drive specification

ST3200822AS

 

ST3160023AS

 

ST3120026AS

ST380013AS

ST340111AS

 

 

 

 

ST3160021AS

 

ST3120022AS

ST380011AS

ST340014AS

 

 

 

 

 

 

 

 

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, read (msec typical)

8.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Average seek, write (msec typical)

9.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Seek power (typical)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operating power (typical)

 

 

 

 

 

 

 

 

 

 

 

 

Idle mode (typical)

See Table 4 and Table 5 on page 8.

 

 

 

Standby mode (typical)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sleep mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voltage tolerance

5V ± 5%

 

 

 

 

 

(including noise)

12V ± 10%

 

 

 

 

 

 

 

 

 

 

 

 

 

Ambient temperature

5° to 55°C (op.)

 

0° to 60°C (op.)

 

 

 

–40° to 70°C (nonop.)

 

–40° to 70°C (nonop.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Temperature gradient

20°C (operating)

 

 

 

 

 

(°C per hour max)

30°C (nonoperating)

 

 

 

 

 

 

 

 

 

 

 

 

 

Relative humidity

5% to 90% (operating)

 

 

 

 

 

5% to 95% (nonoperating)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Relative humidity gradient

30% per hour max

 

 

 

 

 

 

 

 

 

 

 

 

Wet bulb temperature

33 (operating)

 

 

 

 

 

(°C max)

 

40 (nonoperating)

 

 

 

 

 

 

 

 

 

 

 

 

 

Altitude, operating

–60.96 m to 3,048 m

 

 

 

 

 

(–200 ft to 10,000+ ft)

 

 

 

 

 

 

 

 

 

 

 

 

Altitude, nonoperating

–60.96 m to 12,192 m

 

 

 

 

 

(meters below mean sea level, max)

(–200 ft to 40,000+ ft)

 

 

 

 

 

 

 

 

 

 

 

 

 

Shock, operating (Gs max at 2 msec)

63

 

 

 

 

 

 

 

 

 

 

 

 

 

Shock, nonoperating (Gs max at 2 msec)

350 Gs

 

 

 

 

 

 

 

 

 

 

 

Vibration, operating

5–22 Hz: Limited displacement

 

 

 

23–350 Hz: 0.5 G acceleration

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vibration, nonoperating

5–22 Hz: Limited displacement

 

 

 

23–350 Hz: 5.0 Gs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drive acoustics, sound power (bels)

 

 

 

 

 

 

 

Idle*

 

<2.5 (typical)

 

 

 

 

<2.2 (typ)

 

2.7 (max)

 

 

 

 

2.4 (max)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Performance seek

3.4 (typical)

 

 

 

 

3.1 (typical)

3.7 (max)

 

 

 

 

3.5 (max)

 

 

 

 

 

 

 

 

 

 

 

 

 

Nonrecoverable read errors

1 per 1014 bits read

 

 

 

 

 

Mean time between failures

600,000

 

 

 

 

 

 

(power-on hours)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service life

 

5 years

 

 

 

 

 

 

 

 

 

 

To determine the warranty for a specific drive, use a web browser to access the follow-

 

 

ing web page:

 

 

 

 

 

Warranty

 

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 countyr of purchase. The

 

 

system will display the warranty information for your drive.

 

 

 

 

 

 

 

 

 

 

4

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

Table 2:

Drive specifications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ST3160827AS

ST3120827AS

ST380817AS

 

Drive specification

ST3200822AS

ST3160023AS

ST3120026AS

ST380013AS

ST340111AS

 

 

 

ST3160021AS

ST3120022AS

ST380011AS

ST340014AS

 

 

 

 

 

 

Contact start-stop cycles

50,000

 

 

 

 

(25°C, 40% relative humidity)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Supports Hotplug operation per SATA II

Yes

 

 

 

 

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.

2.2Formatted capacity

Model

Formatted capacity*

Guaranteed sectors

Bytes per sector

 

 

 

 

ST3200822AS

200 Gbytes

390,721,968

512

 

 

 

 

ST3160827AS

 

 

 

ST3160023AS

160 Gbytes

312,581,808

512

ST3160021AS

 

 

 

 

 

 

 

ST3120827AS

 

 

 

ST3120026AS

120 Gbytes

234,441,648

512

ST3120022AS

 

 

 

 

 

 

 

ST380817AS

 

 

 

ST380013AS

80 Gbytes

156,301,488

512

ST380011AS

 

 

 

 

 

 

 

ST340111AS

40 Gbytes

78,165,360

512

ST340014AS

 

 

 

 

 

 

 

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

2.2.1LBA 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 48bit addressing support of drives with capacities over 137 Gbytes.

2.3Default 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.

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

5

2.4

Physical organization

 

 

 

 

 

Drive model

Read/write heads

Number of discs

 

 

 

ST3200822AS, ST3160827AS, ST3160023AS and ST3160021AS

4

2

 

 

 

ST3120827AS, ST3120026AS and ST3120022AS

3

2

 

 

 

ST380817AS, ST380013AS and ST380011AS

2

1

 

 

 

ST340111AS and ST340014AS

1

1

 

 

 

 

2.5

Recording and interface technology

 

 

 

 

Interface

 

Serial ATA (SATA)

 

 

Recording method

16/17 EPRML

 

 

Recording density BPI (bits/inch max)

595,000 (671,500 on ST3200822AS model)

 

 

Track density TPI (tracks/inch max)

94,600 (98,000 on ST3200822AS model)

 

 

Areal density (Gbits/inch2 max)

56.3 (68.5 on ST3200822AS model)

Spindle speed (RPM) (± 0.2%)

7,200

 

 

Maximum Internal transfer rate (Mbytes/sec)

85.4

 

 

Sustained transfer rate OD (Mbytes/sec max)

58

 

 

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

150 (SATA 1.0)

 

 

 

Interleave

 

1:1

 

 

Cache buffer

 

ST3200822AS, ST3160827AS, ST3160023AS, ST3120827AS,

8 Mbytes

ST3120026AS, ST380817AS, ST380013AS and ST340111AS

 

ST3160021AS, ST3120022AS, ST380011AS, and ST340014AS

2 Mbytes

 

 

 

2.5.1Physical characteristics

Drive specification

 

 

 

Maximum height

 

(mm)

26.035

(inches)

1.028

 

 

Maximum width

 

(mm)

101.6

(inches)

4.00

 

 

Maximum length

 

(mm)

146.99

(inches)

5.787

 

 

Typical weight

 

(grams)

635

(pounds)

1.4

 

 

6

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

2.6Seek 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.

Table 3:

Typical seek times

 

 

 

 

*Typical seek times (msec)

Read

Write

 

 

 

Track-to-track

<1.0

<1.2

 

 

 

 

Average

 

8.5

9.5

 

 

 

Average latency

4.16

4.16

 

 

 

 

*Measured in performance 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.

2.7Start/stop times

Power-on to Ready (sec)

10 (max)

 

 

Standby to Ready (sec)

10 (max)

 

 

Ready to spindle stop (sec)

10 (max)

 

 

2.8Power specifications

The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 4 on page 20.

2.8.1Power 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.

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

7

• 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 4: DC power requirements (example of 160GB models supporting NCQ[1])

Power dissipation (watts)

Average

5V typ

 

12V typ amps

(watts, 25° C)

amps

 

 

 

 

 

 

 

 

 

Spinup

2.8 (peak)

 

 

 

 

Idle

7.5

0.487

0.422

 

 

 

 

Idle (with offline activity) [2]

9.3

0.875

0.41

Operating (40% r/w, 40% seek, 20% inop.)

12.0

0.631

0.737

 

 

 

 

Seeking

12.5

0.405

0.873

 

 

 

 

Standby/Sleep

1.0

0.185

0.006

 

 

 

 

 

Table 5:

DC power requirements (example of 160GB and 200GB models not supporting NCQ)

 

 

 

 

 

 

Power dissipation (watts)

Average

5V typ

 

12V typ amps

(watts, 25° C)

amps

 

 

 

 

 

 

 

 

 

 

 

Spinup

 

2.8 (peak)

 

 

 

 

 

Idle

 

7.5

0.482

0.424

 

 

 

 

Idle (with offline activity) [2]

9.3

0.587

0.53

Operating (40% r/w, 40% seek, 20% inop.)

12.1

0.638

0.739

 

 

 

 

 

Seeking

 

12.5

0.412

0.87

 

 

 

 

Standby/Sleep

2.0

0.367

0.014

 

 

 

 

 

 

[1]NCQ may not be enabled during power measurements.

[2]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.

8

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

Seagate ST3120026AS, ST3160023AS, ST3160827AS, ST3160021AS, ST380013AS User Manual

2.8.1.1Typical current profiles

+5 Volt Current during spindle start — Typical Amperes

1.50

 

 

 

 

 

 

 

 

 

1.25

 

 

 

 

 

 

 

 

 

1.00

 

 

 

 

 

 

 

 

 

Amps

 

 

 

 

 

 

 

 

 

0.75

 

 

 

 

 

 

 

 

 

0.50

 

 

 

 

 

 

 

 

 

0.25

 

 

 

 

 

 

 

 

 

0.0

 

 

 

 

 

 

 

 

 

0.0

2

4

6

8

10

12

14

16

18

 

 

 

 

 

Seconds

 

 

 

 

Figure 1. Typical 5V startup and operation current profile

+12 Volt Current during spindle start — Typical Amperes

 

2.4

 

 

 

 

 

 

 

 

 

 

2.0

 

 

 

 

 

 

 

 

 

 

1.6

 

 

 

 

 

 

 

 

 

Amps

1.2

 

 

 

 

 

 

 

 

 

 

0.8

 

 

 

 

 

 

 

 

 

 

0.4

 

 

 

 

 

 

 

 

 

 

0.0

 

 

 

 

 

 

 

 

 

 

0.0

2

4

6

8

10

12

14

16

18

 

 

 

 

 

 

Seconds

 

 

 

 

Figure 2. Typical 12V startup and operation current profile

2.8.2Deferred spinup

Barracuda 7200.7 Serial ATA drives provide a deferred spinup feature which storage subsystem controllers can use to sequence disc drive initialization. This is beneficial to systems which include multiple Serial ATA hard disc drives because it allows subsystem controllers to stagger the spinup of each drive to accommodate available power supply current. This feature does not impact time-to-ready in typical desktop systems.

To accommodate the deferred spinup of multiple disc drives in an enclosure, Barracuda 7200.7 Serial ATA disc drives will spin up only after power is applied to the drive and after successful PHY (Physical layer) initialization. PHY initialization occurs after the PHY enters the DP7:DR_Ready state. This state is reached after a suc-

Barracuda 7200.7 Serial ATA Product Manual, Rev. N

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