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DiamondMax 21
40 - 320GB
SATA

March 2007
PN: 100451230

© 2007, Maxtor Corporation All rights reserved
Publication number: 100451230, Rev. A
March 2007
Maxtor and MaxFax are registered trademarks of Maxtor Corporation, registered in the
U.S.A. and other countries. Maxtor DiamondMax, AutTransfer, AutoRead, AutoWrite, DisCache, DiskWare, Defect Free Interface, QuickView, and WriteCache are trademards of
Maxtor COrporation. All other trademarks or registered trademarks are the property of their
respective owners. One gigabyte, or GB, equals one billion bytes when referring to hard
drive capacity. Accessible capacity may vary depending on operating environment and formatting. Quantitative usage examples for various applications are for illustrative purposes.
Actual quantities will vary based on various factors, including file size, file format, features
and application software. Maxtor 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 Maxtor Corporation.

DiamondMax 21 Serial ATA Product Manual, Rev. A

i

ii

DiamondMax 21 Serial ATA Product Manual, Rev. A

Contents
1.0

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1
About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.0

Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1
Specification summary tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2
Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.1
LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3
Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.4
Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5
Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.6
Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.7
Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.8
Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.8.1
Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.8.2
Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.8.3
Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.8.4
Power-management modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.9
Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.9.1
Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.9.2
Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.9.3
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.9.4
Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.9.5
Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.9.6
Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.10
Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.11
Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.12
Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.12.1
Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF) . . . 23
2.13
Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.13.1
Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.13.2
Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.13.3
FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.14
Environmental protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.14.1
European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . . 25
2.15
Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.0

Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1
Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2
Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3
Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4
Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27
27
28
28
29

4.0

Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1
Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2
Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3
Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.1
Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.2
Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.3
S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31
31
32
33
35
39
40

5.0

Maxtor support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

DiamondMax 21 Serial ATA Product Manual, Rev. A

iii

iv

DiamondMax 21 Serial ATA Product Manual, Rev. A

List of Figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.

Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical 12V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive dimensions for 200 -320 GB models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive dimensions for 40-160 GB models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DiamondMax 21 Serial ATA Product Manual, Rev. A

17
18
28
28
29
30

v

1.0

Introduction

This manual describes the functional, mechanical and interface specifications for the following DiamondMax®
21 Serial ATA model drives:
STM3320620AS

STM3160815AS

STM3320820AS

STM3160215AS

STM3250824AS

STM380815AS

STM3250820AS

STM340215AS

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 Giant Magnetoresistive (TGMR) 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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

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 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 www.serialata.org.

2

DiamondMax 21 Serial ATA Product Manual, Rev. A

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:
STM3320620AS

STM3160815AS

STM3320820AS

STM3160215AS

STM3250824AS

STM380815AS

STM3250820AS

STM340215AS

2.1

Specification summary tables

The specifications listed in the following tables are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.

DiamondMax 21 Serial ATA Product Manual, Rev. A

3

Table 1:

4

Drive specifications summary for 320 Gbyte models

Drive specification

STM3320820AS

STM3320620AS

Formatted capacity (512 bytes/sector)*

320 Gbytes

Guaranteed sectors

625,142,448

Heads

4

Discs

2

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density

781 kbits/in max

Track density

145 ktracks/in avg

Areal density

114.4 Gbits/in2 avg

Spindle speed

7,200 RPM

Internal data transfer rate

1,030 Mbits/sec max

Sustained data transfer rate OD

72 Mbytes/sec max

I/O data-transfer rate

300 Mbytes/sec max

ATA data-transfer modes supported

PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6

Cache buffer

16 Mbytes

Height (max)

26.1 mm (1.028 inches)

Width (max)

101.6 mm (4.000 inches) +/- 0.010 inches

Length (max)

146.99 mm (5.787 inches)

Weight (typical)

635 grams

Average latency

4.16 msec

Power-on to ready

15 sec max

Standby to ready

15 sec max

Track-to-track seek time

<0.8 msec typical read; <1.0 typical write

Average seek, read

<8.5 msec typical

Average seek, write

<10.0 msec typical

Startup current (typical) 12V (peak)

2.8 amps

Voltage tolerance (including noise)

5V ± 5%
12V ± 10%

Ambient temperature

0° to 60°C (operating)
–40° to 70°C (nonoperating)

Temperature gradient

20°C per hour max (operating)
30°C per hour max (nonoperating)

Relative humidity

5% to 90% (operating)
5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max

Wet bulb temperature

37.7°C max (operating)
37.7°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

68 Gs max at 2 msec

Non-Operational Shock

350 Gs max at 2 msec

8 Mbytes

DiamondMax 21 Serial ATA Product Manual, Rev. A

Drive specification

STM3320820AS

STM3320620AS

Vibration, operating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.50 Gs
350–500 Hz:: 0.25 Gs

Vibration, nonoperating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs

Drive acoustics, sound power
Idle**

2.5 bels (typical)
2.9 bels (max)

Performance seek

3.0 bels (typical)
3.2 bels (max)

Nonrecoverable read errors

1 per 1014 bits read

Annualized Failure Rate (AFR)

0.34%

Warranty

3 years on distribution units.

Contact start-stop cycles

50,000 at 25°C, 50% rel. humidity

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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

5

Table 2:

6

Drive specifications summary for 250 Gbyte models

Drive specification

STM3250824AS

STM3250820AS

Formatted capacity (512 bytes/sector)*

250 Gbytes

Guaranteed sectors

488,397,168

Heads

3

Discs

2

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density

813 kbits/in max

Track density

145 ktracks/in avg

Areal density

114.4 Gbits/in2 avg

Spindle speed

7,200 RPM

Internal data transfer rate

1,030 Mbits/sec max

Sustained data transfer rate OD

72 Mbytes/sec max

I/O data-transfer rate

300 Mbytes/sec max

ATA data-transfer modes supported

PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6

Cache buffer

8 Mbytes

Height (max)

26.1 mm (1.028 inches)

Width (max)

101.6 mm (4.000 inches) +/- 0.010 inches

Length (max)

146.99 mm (5.787 inches)

Weight (typical)

600 grams (1.32 lb.)

Average latency

4.16 msec

Power-on to ready

11 sec max

Standby to ready

15 sec max

Track-to-track seek time

<0.8 msec typical read, <1.0 msec typical write

Average seek, read

<8.5 msec typical

Average seek, write

<10.0 msec typical

Startup current (typical) 12V (peak)

2.8 amps

Voltage tolerance (including noise)

5V ± 5%
12V ± 10%

Ambient temperature

0° to 60°C per hour max (operating)
–40° to 70°C per hour max (nonoperating)

Temperature gradient

20°C (operating)
30°C (nonoperating)

Relative humidity

5% to 90% (operating)
5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max

Wet bulb temperature

37.7°C max (operating)
37.7°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

68 Gs max at 2 msec

Non-Operational Shock

350 Gs max at 2 msec

DiamondMax 21 Serial ATA Product Manual, Rev. A

Drive specification

STM3250824AS

STM3250820AS

Vibration, operating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.50 Gs
350–500 Hz:: 0.25 Gs

Vibration, nonoperating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs

Drive acoustics, sound power
Idle**

2.5 bels (typical)
2.9 bels (max)

Performance seek

3.0 bels (typical)
3.2 bels (max)

Nonrecoverable read errors

1 per 1014 bits read

Annualized Failure Rate (AFR)

0.34%

Warranty

3 years on distribution units.

Contact start-stop cycles

50,000 at 25°C, 50% rel. humidity

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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

7

Table 3:

8

Drive specifications summary for the 160 Gbyte models

Drive specification

STM3160815AS

STM3160215AS

Formatted capacity (512 bytes/sector)*

160 Gbytes

Guaranteed sectors

312,581,808

Heads

2

Discs

1

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density

824 kbits/in max

Track density

137.259 ktracks/in avg

Areal density

101 Gbits/in2 avg

Spindle speed

7,200 RPM

Internal data transfer rate

930 Mbits/sec max

Sustained data transfer rate OD

78 Mbytes/sec max

I/O data-transfer rate

300 Mbytes/sec max

ATA data-transfer modes supported

PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6

Cache buffer

8 Mbytes

Height (max)

19.99 mm (0.787 inches)

Width (max)

101.6 mm (4.000 inches) +/- 0.010 inches

Length (max)

146.99 mm (5.787 inches)

Weight (typical)

380 grams (0.838 lb.)

Average latency

4.16 msec

Power-on to ready

7.9 sec max

Standby to ready

7.9 sec max

Track-to-track seek time

<1.0 msec typical read; <1.2 msec typical write

Average seek, read

<11 msec typical

Average seek, write

<12 msec typical

Startup current (typical) 12V (peak)

2.8 amps

Voltage tolerance (including noise)

5V ± 5%
12V ± 10%

Ambient temperature

0° to 60°C (operating)
–40° to 75°C (nonoperating)

Temperature gradient

20°C per hour max (operating)
30°C per hour max (nonoperating)

Relative humidity

5% to 90% (operating)
5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max

Wet bulb temperature

37.7°C max (operating)
40°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

Non-Operational Shock

350 Gs max at 2 msec

2 Mbytes

DiamondMax 21 Serial ATA Product Manual, Rev. A

Drive specification

STM3160815AS

STM3160215AS

Vibration, operating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.5 Gs
350–500 Hz:: 0.25 Gs

Vibration, nonoperating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs

Drive acoustics, sound power
Idle**

2.8 bels (typical)
3.0 bels (max)

Quiet seek

3.0 bels (typical)
3.2 bels (max)

Nonrecoverable read errors

1 per 1014 bits read

Annualized Failure Rate (AFR)

0.34%

Warranty

3 years on distribution units.

Contact start-stop cycles

50,000 at 25°C, 50% rel. humidity

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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

9

Table 4:

Drive specifications summary for the 80 Gbyte model

Drive specification

ST380215AS

Formatted capacity (512 bytes/sector)*

80 Gbytes

Guaranteed sectors

156,301,488

Heads

1

Discs

1

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density

824 kbits/in max

Track density

137.259 ktracks/in avg

Areal density

101 Gbits/in2 avg

Spindle speed

7,200 RPM

Internal data transfer rate

930 Mbits/sec max

Sustained data transfer rate OD

78 Mbytes/sec max

I/O data-transfer rate

300 Mbytes/sec max

ATA data-transfer modes supported

PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6

Cache buffer

2 Mbytes

Height (max)

19.99 mm (0.787 inches)

Width (max)

101.6 mm (4.000 inches) +/- 0.010 inches

Length (max)

146.99 mm (5.787 inches)

Weight (typical)

365 grams (0.805 lb.)

Average latency

4.16 msec

Power-on to read

7.9 sec max

Standby to ready

7.9 sec max

Track-to-track seek time

<1.0 msec typical read); <1.2 msec typical write

Average seek, read

<11 msec typical

Average seek, write

<12 msec typical

Startup current (typical) 12V (peak)

2.8 amps

Voltage tolerance (including noise)

5V ± 5%
12V ± 10%

Ambient temperature

0° to 60°C (operating)
–40° to 75°C (nonoperating)

Temperature gradient

20°C per hour max (operating)
30°C per hour max (nonoperating)

Relative humidity

5% to 90% (operating)
5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max

Wet bulb temperature

37.7°C max (operating)
40°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

Non-Operational Shock

350 Gs max at 2 msec

10

DiamondMax 21 Serial ATA Product Manual, Rev. A

Drive specification

ST380215AS

Vibration, operating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.5 Gs
350–500 Hz:: 0.25 Gs

Vibration, nonoperating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs

Drive acoustics, sound power
Idle**

2.8 bels (typical)
3.0 bels (max)

Quiet seek

3.0 bels (typical)
3.2 bels (max)

Nonrecoverable read errors

1 per 1014 bits read

Annualized Failure Rate (AFR)

0.34%

Warranty

3 years on distribution units.

Contact start-stop cycles

50,000 at 25°C, 50% rel. humidity

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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

11

Table 5:

Drive specifications summary for the 40 Gbyte model

Drive specification

STM340215AS

Formatted capacity (512 bytes/sector)*

40 Gbytes

Guaranteed sectors

78,165,360

Heads

1

Discs

1

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density

824 kbits/in max

Track density

137.259 ktracks/in avg

Areal density

101 Gbits/in2 avg

Spindle speed

7,200 RPM

Internal data transfer rate

930 Mbits/sec max

Sustained data transfer rate OD

78 Mbytes/sec max

I/O data-transfer rate

300 Mbytes/sec max

ATA data-transfer modes supported

PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6

Cache buffer

2 Mbytes

Height (max)

19.99 mm (0.787 inches)

Width (max)

101.6 mm (4.000 inches) +/- 0.010 inches

Length (max)

146.99 mm (5.787 inches)

Weight (typical)

365 grams (0.805 lb.)

Average latency

4.16 msec

Power-on to ready

7.9 sec max

Standby to ready

7.9 sec max

Track-to-track seek time

<1.0 msec typical read; <1.2 msec typical write

Average seek, read

<11 msec typical

Average seek, write

<12 msec typical

Startup current (typical) 12V (peak)

2.8 amps

Voltage tolerance (including noise)

5V ± 5%
12V ± 10%

Ambient temperature

0° to 60°C (operating)
–40° to 75°C (nonoperating)

Temperature gradient

20°C per hour max (operating)
30°C per hour max (nonoperating)

Relative humidity

5% to 90% (operating)
5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max

Wet bulb temperature

37.7°C max (operating)
40°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

Non-Operational Shock

350 Gs max at 2 msec

12

DiamondMax 21 Serial ATA Product Manual, Rev. A

Drive specification

STM340215AS

Vibration, operating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.5 Gs
350–500 Hz:: 0.25 Gs

Vibration, nonoperating

5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs

Drive acoustics, sound power
Idle**

2.8 bels (typical)
3.0 bels (max)

Quiet seek

3.0 bels (typical)
3.2 bels (max)

Nonrecoverable read errors

1 per 1014 bits read

Annualized Failure Rate (AFR)

0.34%

Warranty

3 years on distribution units..

Contact start-stop cycles

50,000 at 25°C, 50% rel. humidity

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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

13

2.2

Formatted capacity

Model

Formatted
capacity*

Guaranteed
sectors

Bytes per sector

STM3320620AS

320 Gbytes

625,142,448

512

STM3320820AS

320 Gbytes

625,142,448

512

STM3250824AS

250 Gbytes

488,397,168

512

STM3250820AS

250 Gbytes

488,397,168

512

STM3160815AS

160 Gbytes

312,581,808

512

STM3160215AS

160 Gbytes

312,581,808

512

STM380815AS

80 Gbytes

156,301,488

512

STM340215AS

40 Gbytes

78,165,360

512

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

2.2.1

LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,
where n is the number of guaranteed sectors as defined above.
See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48bit addressing support of drives with capacities over 137 Gbytes.

2.3

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.

14

DiamondMax 21 Serial ATA Product Manual, Rev. A

2.4

Recording and interface technology
Model capacity
320

250

160

Interface

Serial ATA (SATA)

Recording method

Perpendicular

Recording density (kbits/inch max)

781

Track density (ktracks/inch avg)

145

137.259

Areal density (Gbits/inch2 avg)

114.4

101

Spindle speed (RPM)

7,200 ± 0.2%

Internal data transfer rate (Mbits/sec max)

1,030

930

Sustained data transfer rate (Mbytes/sec max)

72

78

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

300

2.5

813

80

40

824

Physical characteristics

Maximum height (200 - 320 GB models)

26.1 mm (1.028 inches)

Maximum height (40 - 160 GB models)

19.99 mm (0.787 inches)

Maximum width

101.6 mm (4.000 +/- 0.010 inches)

Maximum length

146.99 mm (5.787 inches)

Typical weight
STM3320620AS and STM3320820AS

635 grams (1.4 lbs)

STM3250824AS and STM3250820AS

600 grams (1.32 lbs)

STM3160815AS and STM3160215AS

380 grams (0.838 lbs)

STM380815AS and STM340215AS

365 grams (0.805 lbs)

Cache buffer
STM3320620AS

16 Mbytes (16,384 kbytes)

STM3320820AS, STM3250824AS, STM3250820AS, STM3160815AS
and STM380815AS

8 Mbytes (8,192 kbytes)

STM3160215AS and STM340215AS

2 Mbytes (2,048 kbytes)

DiamondMax 21 Serial ATA Product Manual, Rev. A

15

2.6

Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using
drive diagnostics. The specifications in the table below are defined as follows:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between
random tracks, less overhead.
200 - 320 GB models*

40 - 80 GB models**

Typical seek times (msec)

Read

Write

Read

Write

Track-to-track

<0.8

<1.0

<0.8

<1.0

Average

<8.5

<10.0

<11.0

<12.0

Average latency:

4.16

4.16

4.16

4.16

*Measured in performance mode.
**Measured in quiet mode.

Note.

2.7

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.

Start/stop times

Power-on to Ready (sec)

15 (max)

Standby to Ready (sec)

15 (max)

Ready to spindle stop (sec)

10 (max)

2.8

Power specifications

The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 4 on page 28.
2.8.1

Power consumption

Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on
an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient
temperature.
• Spinup power
Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating
speed.
• Seek mode
During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and
does not execute a read or write operation. Servo electronics are active. Seek mode power represents the
worst-case power consumption, using only random seeks with read or write latency time. This mode is not
typical and is provided for worst-case information.
• 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.

16

DiamondMax 21 Serial ATA Product Manual, Rev. A

• 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 6:

DC power requirements

Power dissipation

Avg (watts 25° C)

Avg 5V typ amps

Avg 12V typ amps

Spinup

—

—

2.8 (peak)

Idle*

9.30

0.611

0.520

Idle* (with offline activity)

10.40

0.719

0.567

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

13.00

0.772

0.762

Seeking (random, 20% idle)

12.60

0.613

0.795

Standby

0.80

0.106

0.023

Sleep

0.80

0.106

0.023

*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.

2.8.1.1

Typical current profiles

Figure 1. Typical 5V startup and operation current profile

DiamondMax 21 Serial ATA Product Manual, Rev. A

17

Figure 2. Typical 12V startup and operation current profile

2.8.2

Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on
the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.
• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
• Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.
2.8.3

Voltage tolerance

Voltage tolerance (including noise):
5V ± 5%
12V ± 10%
2.8.4

Power-management modes

The drive provides programmable power management to provide greater energy efficiency. In most systems,
you can control power management through the system setup program. The drive features the following
power-management modes:
Power modes

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.

18

DiamondMax 21 Serial ATA Product Manual, Rev. A

• 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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

19

2.9

Environmental specifications

2.9.1

Ambient temperature

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)

2.9.2

Temperature gradient

Operating:

20°C per hour (68°F per hour max), without condensation

Nonoperating:

30°C per hour (86°F per hour max)

2.9.3

Humidity

2.9.3.1

Relative humidity

Operating:

5% to 90% noncondensing (30% per hour max)

Nonoperating:

5% to 95% noncondensing (30% per hour max)

2.9.3.2

Wet bulb temperature

Operating:

37.7°C (99.9°F max)

Nonoperating:

200 - 750 GB models: 37.7°C (99.9°F max)
40 - 160 GB models: 40°C (104°F max)

2.9.4

Altitude

Operating:

–60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)

Nonoperating:

–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)

2.9.5

Shock

All shock specifications assume that the drive is mounted securely with the input shock applied at the drive
mounting screws. Shock may be applied in the X, Y or Z axis.
2.9.5.1

Operating shock

These drives comply with the performance levels specified in this document when subjected to a maximum
operating shock of 68 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more
than two times per second.

20

DiamondMax 21 Serial ATA Product Manual, Rev. A

2.9.5.2

Nonoperating shock

The nonoperating shock level that the drive can experience without incurring physical damage or degradation
in performance when subsequently put into operation is 350 Gs based on a nonrepetitive half-sine shock pulse
of 2 msec duration.
2.9.6

Vibration

All vibration specifications assume that the drive is mounted securely with the input vibration applied at the
drive mounting screws. Vibration may be applied in the X, Y or Z axis.
2.9.6.1

Operating vibration

The maximum vibration levels that the drive may experience while meeting the performance standards specified in this document are specified below.
5–22 Hz

0.25 Gs (Limited displacement)

22–350 Hz

0.50 Gs

350–500 Hz

0.25 Gs

2.9.6.2

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.
5–22 Hz

0.25 Gs (limited displacement)

22–350 Hz

5.0 Gs

350–500 Hz

1.0 Gs

2.10

Acoustics

Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All measurements 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 7:

Fluid Dynamic Bearing (FDB) motor acoustics
Idle*

Seek

STM3320620AS, STM3320820AS, STM3250824AS and
STM3250820AS

2.5 bels (typ)
2.9 bels (max)

3.0 bels (typ)**
3.2 bels (max)**

STM3160815AS, STM3160215AS, STM380815AS and
STM340215AS

2.8 bels (typ)
3.0 bels (max)

3.0 bels (typ)***
3.2 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.
**Measured in performance mode.
***Measured in quiet mode.

DiamondMax 21 Serial ATA Product Manual, Rev. A

21

2.11

Electromagnetic immunity

When properly installed in a representative host system, the drive operates without errors or degradation in
performance when subjected to the radio frequency (RF) environments defined in the following table:
Table 8:

Radio frequency environments

Test

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,
80% AM with 1 kHz sine
900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz

A

EN 61000-4-3: 96
ENV 50204: 95

Electrical fast
transient

± 1 kV on AC mains, ± 0.5 kV on external I/O

B

EN 61000-4-4: 95

Surge immunity

± 1 kV differential, ± 2 kV common, AC mains

B

EN 61000-4-5: 95

Conducted RF
immunity

150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine A

EN 61000-4-6: 97

Voltage dips,
interrupts

0% open, 5 seconds
0% short, 5 seconds
40%, 0.10 seconds
70%, 0.01 seconds

EN 61000-4-11: 94

22

C
C
C
B

DiamondMax 21 Serial ATA Product Manual, Rev. A

2.12

Reliability

2.12.1

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 operated in an environment of ambient air temperatures of 25°C. Operation at temperatures outside the specifications in Section 2.9 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 environments:
• 2400 power-on-hours per year.
• 10,000 average motor start/stop cycles per year.
• Operations at nominal voltages.
• Temperatures outside the specifications in Section 2.9 may reduce the product reliability.
• 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 a enterprise application.
Nonrecoverable read errors

1 per 1014 bits read, max

Annualized Failure Rate (AFR)

0.34% (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)

Warranty

3 years on distribution units.

Preventive maintenance

None required.

2.13

Agency certification

2.13.1

Safety certification

The drives are recognized in accordance with UL 1950 and CSA C22.2 (950) and meet all applicable sections
of IEC950 and EN 60950.
2.13.2

Electromagnetic compatibility

Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Electromagnetic 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 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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

23

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: DiamondMax
• Certificate number: Pending
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).
2.13.3

FCC verification

These drives are intended to be contained solely within a personal computer or similar enclosure (not attached
as an external device). As such, each drive is considered to be a subassembly even when it is individually marketed to the customer. As a subassembly, no Federal Communications Commission verification or certification
of the device is required.
Maxtor 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 Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402. Refer to publication number 004-000-00345-4.

24

DiamondMax 21 Serial ATA Product Manual, Rev. A

2.14

Environmental protection

Maxtor designs its products to meet environmental protection requirements worldwide, including regulations
restricting certain chemical substances.
2.14.1

European Union Restriction of Hazardous Substances (RoHS)

The European Union Restriction of Hazardous Substances (RoHS) Directive restricts the presence of chemical
substances, including Lead (Pb), in electronic products effective July 2006.
A number of parts and materials in Maxtor products are procured from external suppliers. We rely on the representations of our suppliers regarding the presence of RoHS substances in these parts and materials. Our supplier contracts require compliance with our chemical substance restrictions, and our suppliers document their
compliance with our requirements by providing material content declarations for all parts and materials for the
disc drives documented in this publication. Current supplier declarations include disclosure of the inclusion of
any RoHS-regulated substance in such parts or materials.
Maxtor also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws
and regulations which restrict chemical content in electronic products. These systems include standard operating procedures that ensure that restricted substances are not utilized in our manufacturing operations, laboratory analytical validation testing, and an internal auditing process to ensure that all standard operating
procedures are complied with.

2.15

Corrosive environment

Maxtor 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 Maxtor products are especially sensitive to the presence of sulfide, chloride, and nitrate
contaminants. Sulfur is found to be the most damaging. In addition, electronic components should never be
exposed to condensing water on the surface of the printed circuit board assembly (PCBA) or exposed to an
ambient relative humidity greater than 95%. Materials used in cabinet fabrication, such as vulcanized 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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

25

26

DiamondMax 21 Serial ATA Product Manual, Rev. A

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 discharge (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.

DiamondMax 21 Serial ATA Product Manual, Rev. A

27

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 SATAequipped 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 power connector

SATA interface connector

Figure 3. Serial ATA connectors

3.3

Serial ATA cables and connectors

The Serial ATA interface cable consists of four conductors in two differential pairs, plus three ground connections. The cable size may be 30 to 26 AWG with a maximum length of one meter (39.37 inches). See Table 9
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. DiamondMax 21 drives support latching SATA connectors.

28

DiamondMax 21 Serial ATA Product Manual, Rev. A

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 precautions when mounting the drive:
• Allow a minimum clearance of 0.030 inches (0.76 mm) around the entire perimeter of the drive for cooling.
• Use only 6-32 UNC mounting screws.
• The screws should be inserted no more than 0.150 inch (3.81 mm) into the bottom or side mounting holes.
• Do not overtighten the mounting screws (maximum torque: 6 inch-lb).
Recommended
case temperature
measurement location

[1]
5.787 (146.9898) max.

1.122
+ .020
(28.499
+ .508)
[1]

.138
(3.505)

.250 + .015
(6.35 + .381)
(3x both sides)

1.638
(41.605) [1]
4.000
(101.60)
[1]
4.000
(101.6)
1.028 max [1]
(26.111 max)
.814
(20.676)

CL of conn. Datum B

2.00
(50.80)

CL of drive

Notes:
Dimensions are shown in inches (mm).
[1] Dimensions per SFF-8301 specification

[1]
2 x 3.750
(2 x 95.25)

2 x 1.625
(2 x 41.28) [1]

2 x 1.750
[1]
(2 x 44.45)

4.000
(101.6)
[1]

Recommended
case temperature
measurement location

Figure 5. Drive dimensions for 200 -320 GB models

DiamondMax 21 Serial ATA Product Manual, Rev. A

29

Figure 6. Drive dimensions for 40-160 GB models

30

DiamondMax 21 Serial ATA Product Manual, Rev. A

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

DiamondMax 21 drives incorporate connectors which enable you to hot plug these drives in accordance with
the Serial ATA Revision 2.5 specification. This specification can be downloaded from www.serialata.org.

DiamondMax 21 Serial ATA Product Manual, Rev. A

31

4.2

Serial ATA device plug connector pin definitions

Table 9 summarizes the signals on the Serial ATA interface and power connectors..
Table 9:
Segment

Signal

Serial ATA connector pin definitions
Pin

Function

Definition

S1

Ground

2nd mate

S2

A+

Differential signal pair A from Phy

S3

A-

S4

Ground

2nd mate

S5

B-

Differential signal pair B from Phy

S6

B+

S7

Ground

2nd mate
Key and spacing separate signal and power segments

Power

P1

V33

3.3V power

P2

V33

3.3V power

P3

V33

3.3V power, pre-charge, 2nd mate

P4

Ground

1st mate

P5

Ground

2nd mate

P6

Ground

2nd mate

P7

V5

5V power, pre-charge, 2nd mate

P8

V5

5V power

P9

V5

5V power

P10

Ground

2nd mate

P11

Ground or LED signal

If grounded, drive does not use deferred spin

P12

Ground

1st mate.

P13

V12

12V power, pre-charge, 2nd mate

P14

V12

12V power

P15

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.

32

DiamondMax 21 Serial ATA Product Manual, Rev. A

4.3

Supported ATA commands

The following table lists Serial ATA standard commands that the drive supports. For a detailed description of
the ATA commands, refer to the Serial ATA: High Speed Serialized AT Attachment specification. See
“S.M.A.R.T. commands” on page 40.for details and subcommands used in the S.M.A.R.T. implementation.
Table 10:

Supported ATA commands

Command name

Command code (in hex)

Check Power Mode

98H or E5H

Device Configuration Freeze Lock

B1H / C1H

Device Configuration Identify

B1H / C2H

Device Configuration Restore

B1H / C0H

Device Configuration Set

B1H / C3H

Device Reset

08H

Download Microcode

92H

Execute Device Diagnostics

90H

Flush Cache

E7H

Flush Cache Extended

EAH

Format Track

50H

Identify Device

ECH

Idle

97H or E3H

Idle Immediate

95H or E1H

Initialize Device Parameters

91H

Read Buffer

E4H

Read DMA

C8H

Read DMA Extended

25H

Read DMA Without Retries

C9H

Read Log Ext

2FH

Read Multiple

C4H

Read Multiple Extended

29H

Read Native Max Address

F8H

Read Native Max Address Extended

27H

Read Sectors

20H

Read Sectors Extended

24H

Read Sectors Without Retries

21H

Read Verify Sectors

40H

Read Verify Sectors Extended

42H

Read Verify Sectors Without Retries

41H

Recalibrate

10H

Security Disable Password

F6H

Security Erase Prepare

F3H

DiamondMax 21 Serial ATA Product Manual, Rev. A

33

Command name

Command code (in hex)

Security Erase Unit

F4H

Security Freeze

F5H

Security Set Password

F1H

Security Unlock

F2H

Seek

70H

Set Features

EFH

Set Max Address

F9H

Note: Individual Set Max Address
commands are identified by the value
placed in the Set Max Features register as defined to the right.

Address:
Password:
Lock:
Unlock:
Freeze Lock:

Set Max Address Extended

37H

Set Multiple Mode

C6H

Sleep

99H or E6H

S.M.A.R.T. Disable Operations

B0H / D9H

S.M.A.R.T. Enable/Disable Autosave

B0H / D2H

S.M.A.R.T. Enable Operations

B0H / D8H

S.M.A.R.T. Execute Offline

B0H / D4H

S.M.A.R.T. Read Attribute Thresholds

B0H / D1H

S.M.A.R.T. Read Data

B0H / D0H

S.M.A.R.T. Read Log Sector

B0H / D5H

S.M.A.R.T. Return Status

B0H / DAH

S.M.A.R.T. Save Attribute Values

B0H / D3H

S.M.A.R.T. Write Log Sector

B0H / D6H

Standby

96H or E2H

Standby Immediate

94H or E0H

Write Buffer

E8H

Write DMA

CAH

Write DMA Extended

35H

Write DMA FUA Extended

CDH

Write DMA Without Retries

CBH

Write Log Extended

3FH

Write Multiple

C5H

Write Multiple Extended

39H

Write Multiple FUA Extended

CEH

Write Sectors

30H

Write Sectors Without Retries

31H

Write Sectors Extended

34H

34

00H
01H
02H
03H
04H

DiamondMax 21 Serial ATA Product Manual, Rev. A

4.3.1

Identify Device command

The Identify Device command (command code ECH) transfers information about the drive to the host following
power up. The data is organized as a single 512-byte block of data, whose contents are shown in Table 10 on
page 33. 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 2.0 on page 3 for default parameter settings.
The following commands contain drive-specific features that may not be included in the Serial ATA specification.
Word

Description

Value
0C5AH

0

Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved

1

Number of logical cylinders

16,383

2

ATA-reserved

0000H

3

Number of logical heads

16

4

Retired

0000H

5

Retired

0000H

6

Number of logical sectors per logical track: 63

003FH

7–9

Retired

0000H

10–19

Serial number: (20 ASCII characters, 0000H = none)

ASCII

20

Retired

0000H

21

Retired

0400H

22

Obsolete

0000H

23–26

Firmware revision (8 ASCII character string, padded with blanks to end
of string)

x.xx

27–46

Drive model number: (40 ASCII characters, padded with blanks to end
of string)

47

(Bits 7–0) Maximum sectors per interrupt on Read multiple and Write
multiple (16)

8010H

48

Reserved

0000H

49

Standard Standby timer, IORDY supported and may be disabled

2F00H

50

ATA-reserved

0000H

51

PIO data-transfer cycle timing mode

0200H

52

Retired

0200H

53

Words 54–58, 64–70 and 88 are valid

0007H

54

Number of current logical cylinders

xxxxH

55

Number of current logical heads

xxxxH

56

Number of current logical sectors per logical track

xxxxH

57–58

Current capacity in sectors

xxxxH

59

Number of sectors transferred during a Read Multiple or Write Multiple
command

xxxxH

DiamondMax 21 Serial ATA Product Manual, Rev. A

35

Word

Description

Value

60–61

Total number of user-addressable LBA sectors available
(see Section 2.2 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.

0FFFFFFFh*

62

Retired

0000H

63

Multiword DMA active and modes supported (see note following this
table)

xx07H

64

Advanced PIO modes supported (modes 3 and 4 supported)

0003H

65

Minimum multiword DMA transfer cycle time per word (120 nsec)

0078H

66

Recommended multiword DMA transfer cycle time per word (120
nsec)

0078H

67

Minimum PIO cycle time without IORDY flow control (240 nsec)

00F0H

68

Minimum PIO cycle time with IORDY flow control (120 nsec)

0078H

69–74

ATA-reserved

0000H

75

Queue depth

0000H

76

Serial ATA capabilities

xxxxH

77

Reserved for future Serial ATA definition

xxxxH

78

Serial ATA features supported

xxxxH

79

Serial ATA features enabled

xxxxH

80

Major version number

003EH

81

Minor version number

0000H

82

Command sets supported

364BH

83

Command sets supported

7C03H

84

Command sets support extension

4003H

85

Command sets enabled

30xxH

86

Command sets enabled

0001H

87

Command sets enable extension

4000H

88

Ultra DMA support and current mode (see note following this table)

xx3FH

89

Security erase time

0000H

90

Enhanced security erase time

0000H

92

Master password revision code

FFFEH

93

Hardware reset value (see description following this table)

xxxxH

95–99

ATA-reserved

0000H

100–
103

Total number of user-addressable LBA sectors available (see Section
2.2 for related information). These words are required for drives that
support the 48-bit addressing feature. Maximum value:
0000FFFFFFFFFFFFh.

STM3320620AS = 625,142,448
STM3320820AS = 625,142,448
STM3250824AS = 488,397,168
STM3250824AS = 488,397,168
STM3160815AS = 312,581,808
STM3160215AS = 312,581,808
STM380815AS = 156,301,488
STM340215AS = 78,165,360

36

DiamondMax 21 Serial ATA Product Manual, Rev. A

Word

Description

Value

104–
127

ATA-reserved

0000H

128

Security status

0001H

129–
159

Maxtor-reserved

xxxxH

160–
254

ATA-reserved

0000H

255

Integrity word

xxA5H

Note.

Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not supported

DiamondMax 21 Serial ATA Product Manual, Rev. A

37

Note.

See the bit descriptions below for words 63, 88, and 93 of the Identify Drive data.

Description (if bit is set to 1)

38

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.

5

Ultra DMA mode 5 is supported.

6

Ultra DMA mode 6 is supported.

8

Ultra DMA mode 0 is currently active.

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.

13

Ultra DMA mode 5 is currently active.

14

Ultra DMA mode 6 is currently active.

DiamondMax 21 Serial ATA Product Manual, Rev. A

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 interrupt. 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 11:

Set Features command values

02H

Enable write cache (default).

03H

Set transfer mode (based on value in Sector Count register).
Sector Count register values:
00H Set PIO mode to default (PIO mode 2).
01H Set PIO mode to default and disable IORDY (PIO mode 2).
08H PIO mode 0
09H PIO mode 1
0AH PIO mode 2
0BH PIO mode 3
0CH PIO mode 4 (default)
20H Multiword DMA mode 0
21H Multiword DMA mode 1
22H Multiword DMA mode 2
40H Ultra DMA mode 0
41H Ultra DMA mode 1
42H Ultra DMA mode 2
43H Ultra DMA mode 3
44H Ultra DMA mode 4
45H Ultra DMA mode 5
46H Ultra DMA mode 6

10H

Enable use of SATA features

55H

Disable read look-ahead (read cache) feature.

82H

Disable write cache

90H

Disable use of SATA features

AAH

Enable read look-ahead (read cache) feature (default).

F1H

Report full capacity available

Note.

At power-on, or after a hardware or software reset, the default values of the features are as indicated above.

DiamondMax 21 Serial ATA Product Manual, Rev. A

39

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 monitors 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.
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 12:

S.M.A.R.T. commands

Code in features register

S.M.A.R.T. command

D0H

S.M.A.R.T. Read Data

D2H

S.M.A.R.T. Enable/Disable Attribute Autosave

D3H

S.M.A.R.T. Save Attribute Values

D4H

S.M.A.R.T. Execute Off-line Immediate (runs DST)

D5H

S.M.A.R.T. Read Log Sector

D6H

S.M.A.R.T. Write Log Sector

D8H

S.M.A.R.T. Enable Operations

D9H

S.M.A.R.T. Disable Operations

DAH

S.M.A.R.T. Return Status

Note.

40

If an appropriate code is not written to the Features Register, the command is aborted and 0x 04
(abort) is written to the Error register.

DiamondMax 21 Serial ATA Product Manual, Rev. A

5.0

Maxtor support services

Before contacting Maxtor Support, use the Hard Disk Information feature in MaxBlast to view the model number and serial number of your drive. These numbers can be used to get help from Maxtor Support, register
your drive, and look up information on the Maxtor website.
Please visit www.maxtor.com to obtain comprehensive support information, such as:
•

Warranty services
Drive returns, warranty status, and limited warranty statement.

•

Product support
Installation tutorials, specifications, jumper settings, installation guides, and product manuals.

•

Software downloads
Installation software, utilities, and diagnostics.

•

Knowledge Base
Troubleshooting information, FAQs, and resolved problem database.

•

Product Index
Current and legacy Maxtor products listing.

Click on Worldwide Support to access the Knowledge Base, download software updates, register your drive,
and get assistance via e-mail

DiamondMax 21 Serial ATA Product Manual, Rev. A

41

42

DiamondMax 21 Serial ATA Product Manual, Rev. A

Index
A
ACA 24
acceleration 21
acoustics 21
Active 18
Active mode 18
actuator arm 16
AFR 23
Agency certification 23
altitude 20
Ambient temperature 20
ambient temperature 16
Annualized Failure Rate 23
Annualized Failure Rate (AFR) 23
areal density 1, 15
ATA commands 33
Australia/New Zealand Standard AS/NZS3548 1995
24
Australian Communication Authority (ACA) 24
Australian C-Tick 24
Average latency 16
Average seek time 16

B
buffer 15

C
cables and connectors 28
cache 15
capacity 14
case temperature 20
CE mark 23
certification 23
Check Power Mode 33
compatibility 23
Conducted noise 18
Conducted RF immunity 22
Configuring the drive 27
connectors 28
Corrosive environment 25
CSA C22.2 (950) 23
cycles 23
Cylinders 14

D
data-transfer rates 1
DC power 16
Default logical geometry 14
density 15
Device Configuration Freeze Lock 33

DiamondMax 21 Serial ATA Product Manual, Rev. A

Device Configuration Identify 33
Device Configuration Restore 33
Device Configuration Set 33
Device Reset 33
dimensions 29, 30
disc surface 16
dissipation 17
Download Microcode 33
duty cycle 23

E
Electrical fast transient 22
Electromagnetic compatibility 23
Electromagnetic Compatibility (EMC) 24
Electromagnetic Compatibility control Regulation 24
Electromagnetic Compatibility Directive (89/336/EEC)
23
Electromagnetic immunity 22
Electrostatic discharge 22
electrostatic discharge (ESD) 27
EN 55022, Class B 23
EN 55024 23
EN 60950 23
enclosures 24
Environmental specifications 20
EPRML 1
error-correction algorithms 1
errors 23
ESD 27
EU 23
European Union (EU) requirements 23
Execute Device Diagnostics 33

F
FCC verification 24
features 1
Flush Cache 33
Flush Cache Extended 33
Format Track 33
Formatted capacity 14

G
geometry 14
Gs 21
guaranteed sectors 14

H
Handling precautions 27
heads 14
height 15
humidity 20

43

I
I/O data-transfer rate 15
I/O duty cycle 23
Identify Device 33
Identify Device command 35
Idle 18, 33
Idle Immediate 33
Idle mode 17, 19
IEC950 23
Information Technology Equipment (ITE) 23
Initialize Device Parameters 33
Input noise ripple 18
input voltage 16
interface 15, 31
interference 24
internal data-transfer rate OD 15
is 16
ISO document 7779 21
ITE 23

Operating power 17
Operating shock 20
Operating vibration 21

P
Physical characteristics 15
point-to-point 2, 28
Power consumption 16
power consumption 16
power dissipation 17
Power modes 18
Power specifications 16
Power-management modes 18
Power-on to Ready 16
power-on-hours 23
precautions 27
printed circuit board 27
programmable power management 18

Q
K

quick reference 3

Korea Ministry of Information and Communication
(MIC) 24
Korean RRL 24

R

L
latency 16
latency time 16
LBA mode 14
length 15
logical geometry 14

M
maintenance 23
master/slave 2
maximum temperature 20
Mean Time Between Failures 23
MIC 24
mounting 29
mounting screws 20
mounting the drive 27
MTBF 23

N
noise 18
nominal power 16
Nonoperating shock 21
Nonoperating vibration 21
Nonrecoverable read errors 23

O
operating 17

44

Radiated RF immunity 22
radio and television interference 24
radio frequency (RF) 22
random seeks 16, 17
Read Buffer 33
Read DMA 33
Read DMA Extended 33
Read DMA without Retries 33
read errors 23
Read Log Ext 33
Read Multiple 33
Read Multiple Extended 33
Read Native Max Address 33
Read Native Max Address Extended 33
Read Sectors 33
Read Sectors Extended 33
Read Sectors Without Retries 33
Read Verify Sectors 33
Read Verify Sectors Extended 33
Read Verify Sectors Without Retries 33
read/write actuator arm 16
Read/write heads 14
Read/write power 16
Recalibrate 33
recording density 15
recording method 15
Recording technology 15
relative humidity 20
Reliability 23
RF 22
RMS read/write current 18

DiamondMax 21 Serial ATA Product Manual, Rev. A

RoHS 25
RRL 24

S
S.M.A.R.T. Disable Operations 34
S.M.A.R.T. Enable Operations 34
S.M.A.R.T. Enable/Disable Autosave 34
S.M.A.R.T. Execute Offline 34
S.M.A.R.T. implementation 33
S.M.A.R.T. Read Attribute Thresholds 34
S.M.A.R.T. Read Data 34
S.M.A.R.T. Read Log Sector 34
S.M.A.R.T. Return Status 34
S.M.A.R.T. Save Attribute Values 34
S.M.A.R.T. Write Log sector 34
Safety certification 23
SATA 31
screws 20
sectors 14
Sectors per track 14
Security Disable Password 33
Security Erase Prepare 33
Security Erase Unit 34
Security Freeze 34
Security Set Password 34
Security Unlock 34
Seek 34
seek mode 16
Seek mode power 16
Seek time 16
Seeking 17
Serial ATA (SATA) interface 31
serial ATA ports 2
Servo electronics 16
servo electronics 17
Set Features 34
Set Max Address 34
Set Max Address Extended 34
Set Multiple Mode 34
Shock 20
single-track seeks 16
Sleep 17, 18, 34
Sleep mode 19
sound 21
Specification summary table 3
spindle speed 15
Spinup 17
Spinup power 16
Standby 17, 18, 34
Standby Immediate 34
Standby mode 17, 19
standby timer 19
Standby to Ready 16
Start/stop times 16
start-stop cycles 23

DiamondMax 21 Serial ATA Product Manual, Rev. A

static-discharge 27
subassembly 24
support services 41
Surge immunity 22

T
technical support services 41
temperature 16, 20
temperature gradient 20
timer 19
timers 19
track density 15
Track-to-track 16
Track-to-track seek time 16
tunneling magnetoresistive (TGMR) recording heads
1

U
UL 1950 23

V
Vibration 21
voltage 16
Voltage dips, interrupts 22
Voltage tolerance 18

W
Warranty 23
weight 15
wet bulb temperature 20
width 15
Write Buffer 34
Write DMA 34
Write DMA Extended 34
Write DMA FUA Extended 34
Write DMA Without Retries 34
Write Log Extended 34
Write Multiple 34
Write Multiple Extended 34
Write Multiple FUA Extended 34
Write Sectors 34
Write Sectors Extended 34
Write Sectors Without Retries 34

45

46

DiamondMax 21 Serial ATA Product Manual, Rev. A

Maxtor Corporation
920 Disc Drive, Scotts Valley, California 95066-4544, USA
Publication Number: 100451230, Rev. A, Printed in USA



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