Western Digital AC29100 - Expert 9.1 GB Hard Drive Product Specifications Download Page 2

WD Caviar 

Blue

-2-

Specifications

1

1 TB

640 GB

500 GB

500 GB

320 GB

320 GB

Model number

WD10EALS

WD6400AAKS

WD5000AAKS

WD5000AAKB

WD3200AAKS
WD3200AAJS

WD3200AAJB

Interface

SATA 3 Gb/s

SATA 3 Gb/s

SATA 3 Gb/s

PATA 100 MB/s

SATA 3 Gb/s

PATA 100 MB/s

Formatted capacity

1,000,204 MB

640,135 MB

500,107 MB

500,107 MB

320,072 MB

320,072 MB

User sectors per drive

1,953,525,169

1,250,263,728

976,773,168

976,773,168

625,142,448

625,142,448

LBA support

Yes

Yes

Yes

Yes

Yes

Yes

SATA latching connector

Yes

Yes

Yes

No

Yes

No

Actuator latch/auto park

Yes

Yes

Yes

Yes

Yes

Yes

Form factor

3.5-inch

3.5-inch

3.5-inch

3.5-inch

3.5-inch

3.5-inch

RoHS compliant

2

Yes

Yes

Yes

Yes

Yes

Yes

Performance

Data transfer rate (max)

Buffer to host
Host to/from drive (sustained)

3 Gb/s
126 MB/s

3 Gb/s
126 MB/s

3 Gb/s
126 MB/s

100 MB/s

3

126 MB/s

3 Gb/s
126 MB/s

100 MB/s

3

126 MB/s

Cache (MB)

32

16

16

16

16 (WD3200AAKS)
8 (WD3200AAJS)

8

Rotational speed (RPM)

7200

7200

7200

7200

7200

7200

Reliability/Data Integrity

Load/unload cycles

4

300,000

300,000

300,000

300,000

300,000

300,000

Non-recoverable read errors 
per bits read

<1 in 10

14

 

<1 in 10

14

 

<1 in 10

15

 

<1 in 10

14

 

<1 in 10

15

 

<1 in 10

15

 

Limited warranty (years)

5

3

3

3

3

3

3

Power Management

12VDC (A, peak)

1.95

1.375

1.77

1.375

1.77

1.77

Average power requirements (W)

Read/Write 
Idle
Standby
Sleep

6.8
6.1
0.7
0.7

8.3
7.7
1.0
1.0

6.0
5.6
0.9
0.9

8.3
7.7
1.0
1.0

5.36
4.92
0.73
0.73

5.36
4.92
0.73
0.73

Environmental Specifications

6

Temperature (°C)

Operating
Non-operating

0 to 60
-40 to 70

0 to 60
-40 to 70

0 to 60
-40 to 70

0 to 60
-40 to 70

0 to 60
-40 to 65

0 to 60
-40 to 65

Shock (Gs)

Operating (2 ms, read)
Operating (2 ms, read/write)
Non-operating (1 ms)

30
65
300

30
65
300

30
65
350

30
65
300

30
65
350

30
65
350

Average acoustics (dBA)

7

Idle mode
Performance seek mode

28
33

25
29

29
30

25
29

29
30

29
30

Physical Dimensions

Height (in./mm, max)

1.028/25.4

1.028/25.4

1.028/25.4

1.028/25.4

1.028/25.4

1.028/25.4

Length (in./mm, max)

5.787/147

5.787/147

5.787/147

5.787/147

5.787/147

5.787/147

Width (in./mm, ± .01 in.)

4/101.6

4/101.6

4/101.6

4/101.6

4/101.6

4/101.6

Weight (lb./kg, ± 10%)

1.52/0.69

1.32/0.60

0.99/0.45

1.32/0.60

0.95/0.43

0.95/0.43

1

As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 
bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 3 Gb/s transfer rate calculated according to the Serial ATA specification published by the 
SATA-IO organization as of the date of this specification sheet. Visit www.sata-io.org for details.

2

WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the 
European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances.

3

Maximum burst rate running the Mode 5 Ultra ATA transfer mode.

4

Controlled unload at ambient condition.

5

The term of the limited warranty may vary by region. Visit support.wdc.com/warranty for details.

6

No non-recoverable errors during operating tests or after non-operating tests.

7

Sound power level.

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