Specifications

DATA SHEET

NAS HARD DRIVES

Specifications subject to change without notice.

1

Not all products may be available in all regions of the world

² 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 6 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. Performance will

vary depending on your hardware and software components and configurations.

³ WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazard-

ous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.

⁴ Controlled unload at ambient condition.

⁵ MTBF specifications are based upon internal testing using a 40°C base casting temperature. MTBF is based on

a sample population and is estimated by statistical measurements and acceleration algorithms. MTBF does not

predict an individual drive’s reliability and does not constitute a warranty.

⁶ Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annual-

ized (TB transferred X (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and

software components and configurations.

⁷ See support.wdc.com/warranty for regionally specific warranty details.

⁸ Power measurements at room-ambient temperature.

⁹ No non-recoverable errors during operating tests or after non-operating tests.

10

Sound power level.

14TB

12TB

10TB

10TB

8TB

Model Number¹

WD140EFFX

WD120EFAX

WD101EFAX

WD100EFAX

WD80EFAX

Interface²

SATA 6 Gb/s

SATA 6 Gb/s

SATA 6 Gb/s

SATA 6 Gb/s

SATA 6 Gb/s

Formatted capacity²

14TB

12TB

10TB

10TB

8TB

Form factor

3.5-inch

3.5-inch

3.5-inch

3.5-inch

3.5-inch

Native command queuing

Yes

Yes

Yes

Yes

Yes

Advanced Format (AF)

Yes

Yes

Yes

Yes

Yes

RoHS compliant³

Yes

Yes

Yes

Yes

Yes

Performance

Interface Transfer Rate² up to

210 MB/s

196 MB/s

215 MB/s

210 MB/s

198 MB/s

Cache (MB)²

512

256

256

256

256

Performance Class

5400 RPM Class

5400 RPM Class

5400 RPM Class

5400 RPM Class

5400 RPM Class

Reliability/Data Integrity

Load/unload cycles⁴

600,000

600,000

600,000

600,000

600,000

Non-recoverable errors per bits

read

MTBF (hours)⁵

1,000,000

1,000,000

1,000,000

1,000,000

1,000,000

Workload Rate (TB/year)⁶

180

180

180

180

180

Limited warranty (years)⁷

3

3

3

3

3

12VDC ±5% (A, peak)

5VDC ±5% (A, peak)

Average power requirements (W)

Read/Write

Idle

Standby and Sleep

1.85

6.5

3.0

0.8

1.84

6.3

2.9

0.6

1.75

8.4

4.6

0.5

1.79

5.7

2.8

0.5

1.85

8.8

5.3

0.8

Environmental Specifications⁹

Temperature (°C)

Operating

Non-operating

0 to 65

-40 to 70

0 to 65

-40 to 70

0 to 65

-40 to 70

0 to 65

-40 to 70

0 to 65

-40 to 70

Shock (Gs)

Operating, (2 ms, read/write)

Operating, (2 ms, read)

Non-operating (2 ms)

30

65

300

30

65

300

30

65

250

30

65

300

30

65

300

Idle

Seek (average)

20

29

20

29

34

38

20

29

27

29

Physical Dimensions

Height (in./mm, max)

1.028/26.1

1.028/26.1

1.028/26.1

1.028/26.1

1.028/26.1

Length (in./mm, max)

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

Weight (lb/kg , ± 10%)

1.52/0.69

1.46/0.66

1.65/0.75

1.43/0.65

1.58/0.715