WD Se, WD4000F9YZ Applications

WD Se

Datacenter Capacity HDD

Optimal Storage for NAS and Scale-Out Architectures

WD’s Se hard drives provide an ideal solution for scale­out datacenters, delivering a cost-effective combination of
performance, reliability, and workload capability while maintaining
the hardiness of a true enterprise-class design. All WD
datacenter storage devices are designed from the ground up to
deliver optimal performance and maximum data integrity while
running 24x7x365 in demanding multi-slot environments.

INTERFACE

SATA 6 Gb/s

MODEL NUMBERS

WD4000F9YZ
WD3000F9YZ
WD2000F9YZ

Product Benets

A pedigree in enterprise

WD, one of the storage industry’s
pioneers and long-time leaders,
has a rich history of manufacturing
reliable enterprise storage at an
affordable cost. Built on a
time-tested, multi-generation
platform, with over 28 million
terabytes of enterprise-class
storage shipped*, WD understands
reliable high-quality products are
the backbone of your datacenter
investment.

Designed for quality and reliability

All drives undergo at least 5 million
hours of functional testing, and over
20 million hours of additional testing
under actual workloads in actual
server and storage systems.

*Quantity shipped reected as of March 2013.

WIDTH/HEIGHT

3.5-inch/1-inch

Dual processor

Twice the processing power to
maximize performance.

RAFF™ rotational vibration
cancellation technology

Enhanced RAFF technology includes
sophisticated electronics to monitor
the drive and correct both linear and
rotational vibration in real time. The
result is a signicant performance
improvement in high vibration
environments over the previous
generation of drives.

Dual actuator technology

A head positioning system with two
actuators that improves positional
accuracy over the data track(s). The
primary actuator provides coarse
displacement using conventional
electromagnetic actuator principles.
The secondary actuator uses
piezoelectric motion to ne tune the
head positioning to a higher degree
of accuracy.

ROTATIONAL SPEED

7200 RPM

StableTrac

The motor shaft is secured at both
ends to reduce system-induced
vibration and stabilize platters for
accurate tracking during read and
write operations.

Multi-axis shock sensor

Automatically detects the subtlest
shock events and compensates to
protect the data.

RAID-specic, time-limited error
recovery (TLER)

Prevents drive fallout caused by the
extended hard drive error-recovery
processes common to desktop
drives.

™

CAPACITIES

2 TB to 4 TB

Note: Not all products may
be available in all regions of
the world.

NoTouch™ ramp load technology

The recording head never touches
the disk media ensuring signicantly
less wear to the recording head
and media as well as better drive
protection in transit.

Thermal extended burn-in test

Each drive is put through extended
burn-in testing with thermal cycling to
ensure reliable operation.

Dynamic y height technology

Each read-write head’s y height is
adjusted in real time for optimum
reliability.

Applications

Ideal for bulk cloud storage, replicated environments, content delivery networks (CDNs), large-scale network attached storage (NAS), backup and archiving.

Specications 4 TB 3 TB 2 TB

Model number WD4000F9YZ WD3000F9YZ WD2000F9YZ
Interface SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s
Formatted capacity
User sectors per drive 7,814,037,168 5,860,533,168 3,907,029,168
Native command queuing Yes Yes Yes
Form factor 3.5-inch 3.5-inch 3.5-inch
RoHS compliant

Performance

Data transfer rate (max)
Buffer to host
Host to/from drive (sustained)

Cache (MB) 64 64 64
Rotational speed (RPM) 7200 7200 7200

Reliability/Data Integrity

Load/unload cycles
Non-recoverable read errors per bits read

MTBF (hours)

4

AFR (%)
Limited warranty (years)

Power Management

Average power requirements (W)
Sequential read
Sequential write
Random read/write
Idle

Environmental Specications

Temperature (°C)
Operating
Non-operating

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

Acoustics (dBA)
Idle
Seek (average)

Physical Dimensions

Height (in./mm, max) 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
Width (in./mm, ± .01 in.) 4/101.6 4/101.6 4/101.6
Weight (lb./kg, ± 10%) 1.66/0.75 1.66/0.75 1.66/0.75

1

2

3

4

4 TB 3 TB 2 TB

Yes Yes Yes

6 Gb/s
171 MB/s

300,000 300,000 300,000

<10 in 1015 <10 in 10

6 Gb/s
168 MB/s

6 Gb/s
164 MB/s

15

<10 in 1015

800,000 800,000 800,000

1.10 1.10 1.10

5

6

7

5 5 5

9.5

9.1

9.5

8.1

5 to 55

-40 to 70

30
65
300

31
34

9.5

9.1

9.5

8.1

5 to 55

-40 to 70

30
65
300

31
34

9.5

9.1

9.5

8.1

5 to 55

-40 to 70

30
65
300

31
34

WD Se

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 6 Gb/s transfer rate calculated according to the Serial ATA specication published by the SATA-IO organization as of the date of this specication sheet. Visit
www.sata-io.org for details.

2

WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.

3

Controlled unload at ambient condition.

4

Product MTBF and AFR specications are based upon a 40°C base casting and system workloads of up to 180 TB/year (workload is dened as the amount of user data transferred to or from the hard drive).

5

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

6

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

7

Sound power level.

Western Digital
3355 Michelson Drive, Suite 100
Irvine, California 92612
U.S.A.

For service and literature:

http://support.wd.com
www.wd.com

800.ASK.4WDC
(800.275.4932)

800.832.4778 Spanish
+800.6008.6008 Asia Pacic

00800.27549338 Europe

+31.880062100 Europe/Middle East/Africa

North America

(toll free where available)

Western Digital, WD, and the WD logo are registered trademarks in the U.S. and
other countries; and RAFF, NoTouch, StableTrac, and FIT Lab are trademarks of
Western Digital Technologies, Inc. Other marks may be mentioned herein that
belong to other companies. Product specications subject to change without
notice.

© 2013 Western Digital Technologies, Inc. All rights reserved.

Canada ICES-003 Class B / NMB-003 Classe B

2879-771475-A00 May 2013