Western digital WD RE2 DATASHEET
WD RE2
Enterprise Hard Drives
Enterprise-class
1.2 million hours MTBF
24 x 7 reliability
Enterprise Hard Drives
Interface
SATA
Width/Height
3.5-inch/1-inch
Rotational Speed
7200 RPM
Capacities
160 to 750 GB
Model Numbers
WD7500AYYS
WD5001ABYS
WD5000ABYS
WD4001ABYS
WD4000ABYS
WD3201ABYS
WD1601ABYS
Note: Not all products
may be available in all
regions of the world.
With 1.2 million hours MTBF, 5-year limited warranty, 3 Gb/s SATA
technology, and enhanced vibration tolerance, WD RE2 drives offer an ideal
combination of reliability, high capacity, and optimum performance for
enterprise applications.
Product Benefits
Superior reliability - Designed and manufactured to provide server-class reliability in high
duty cycle environments. With 1.2 million hours MTBF, these drives have the highest available
reliability rating on a high-capacity drive.
High capacity - Up to 750 GB of storage packed with server-class features and low
cost-per-gigabyte value.
Fast - With a 3 Gb/s data transfer rate, native command queuing (NCQ), and 16 MB cache,
these drives deliver optimum performance.
RAID-specific, Time-Limited Error Recovery (TLER) - Significantly reduces drive fallout
caused by the extended hard drive error-recovery processes common to desktop drives.
Rotary Acceleration Feed Forward (RAFF
™) - Provides enhanced vibration tolerance by
optimizing operation and performance when the drives are used in vibration-prone, multidrive
systems such as rack-mounted servers or network storage.
5-year limited warranty
Applications
Servers, network attached storage, scientific computing, life sciences, video surveillance,
enterprise backup, software build systems, document and image management, audio/video
media applications, other demanding write-intensive applications.
The WD Promise
WD understands the importance of the information you save to your hard
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drive and we are committed to protecting that data with exceptionally reliable
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products, advanced data protection technology, and superior customer support.
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No one does more to safeguard your data than WD.
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WD RE2
Enterprise Hard Drives
Drive Specifications
160 GB 320 GB 400 GB 500 GB 750 GB
Formatted capacity1 160,041 MB 320,072 MB 400,088 MB 500,107 MB 750,156 MB
User sectors per drive 312,581,808 625,142,448 781,422,768 976,773,168 1,465,149,168
Model number WD1601ABYS WD3201ABYS WD4000ABYS WD5000ABYS WD7500AYYS
Actuator latch/auto park Yes Yes Yes Yes Yes
Bytes per sector (STD) 512 512 512 512 512
Dedicated landing zone Yes Yes Yes Yes Yes
Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch
Interface SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s SATA 3 Gb/s
Native Command
Queuing
RoHS compliant
2
Yes Yes Yes Yes Yes
Yes Yes Yes Yes Yes
WD4001ABYS WD5001ABYS
Enterprise Hard Drives
Performance Specifications
Average latency 4.2 ms
Buffer 16 MB
Cache
Read Adaptive
Write Yes
Data transfer rate
Buffer to host
Buffer to disk
Drive ready time 12.0 sec (average)
Error rate
(non-recoverable)
LBA support Yes
MTBF5 1,200,000 hours
Rotational speed 7200 RPM
Seek time
Full stroke 21 ms (average)
Read 8.9 ms (average)
Track-to-Track 0.6 ms (average)
Limited warranty 5-year
3
4
3 Gb/s (maximum)
98 MB/s (sustained)
<1 in 1015 bits read
Environmental Specification6
Shock
Operating (2 ms) 30G (write), 65G (read)
Non-operating (1 ms) 250G
Note: Half-sine wave, measured in 2 ms duration and without
isolation.
Vibration
Operating
Random 0.004 g2/Hz (10 to 300 Hz)
Linear 20–300 Hz, 0.75G (0 to peak)
Non-operating
Random 0.05 g2/Hz (10 to 300 Hz)
Linear 20–500 Hz, 4.0G (0 to peak)
Operating Temperature and Humidity
Temperature 5°C to 55°C
0.008 g2/Hz (300 to 500 Hz)
0.01 g2/Hz (300 to 500 Hz)
Humidity 5–95% RH non-condensing
Physical Dimensions
Height 1.028 in (25.4 mm)
Length 5.787 in (147.0 mm)
Width 4.0 in (101.6 mm) ±0.01 in
4
Weight
1.61 lb (0.73 kg) ±10%
Thermal gradient 20°C/hour (maximum)
Non-Operating Temperature and Humidity
Temperature –40°C to 65°C
Humidity 5–95% RH non-condensing
Thermal gradient 30°C/hour
4
Acoustics (Average)
Idle mode
7
28 dBA
Performance seek mode834 dBA
Quiet seek mode 30 dBA
1
One gigabyte (GB) = one billion bytes. One terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment.
2
WD products manufactured and sold worldwide after August 1, 2005, 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
Effective maximum SATA 3 Gb/s transfer rate.
4
Maximum drive capacity model.
5
After 24 power-on hours.
6
No non-recoverable errors during operating test or after non-operating tests.
7
20 KHz cutoff.
8
Sound power level.
For service and literature:
support.wdc.com
www.westerndigital.com
800.ASK.4WDC North America
949.672.7199 Spanish
+800.6008.6008Asia Pacific
+31.20.4467651EMEA
Western Digital, WD, and the WD logo are
registered trademarks in the U.S. and other
countries; and the FIT Lab logo and RAFF are
trademarks of Western Digital Technologies,
Inc. Other marks may be mentioned herein
that belong to other companies. Product
specifications subject to change without
notice.
© 2008 Western Digital Technologies, Inc.
All rights reserved.
Western Digital
20511 Lake Forest Drive
Lake Forest, California 92630
U.S.A
2879-701176-A11 Jun 2008
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