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WD RE2
Enterprise Hard Drives
1.2 Million Hours MTBF
High Capacity
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
WD1601ABYS
WD2502ABYS
WD3201ABYS
WD4000ABYS
WD4001ABYS
WD5000ABYS
WD5001ABYS
WD7500AYYS
Note: Not all products
may be available in all
regions of the world.
WD RE2 hard drives are the world’s most reliable server-class SATA drives in
the market. With 1.2 million hours MTBF, 5-year limited warranty, 3 Gb/s
SATA technology, and best-in-class vibration tolerance, WD RE2 drives offer
the best combination of superior reliability, high capacity, and optimum
performance for enterprise applications.
Product Benefits
Superior reliability - Designed and manufactured to server-class standards to provide
best-in-class enterprise 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 next-generation SATA interface, 3 Gb/s data transfer rate, Native Command
Queuing (NCQ), and 16 MB cache, these drives deliver optimum performance.
™
Low power - Active Power Save
delivers best-in-class seek mode power consumption
through an advanced WD firmware which conserves power in active seek modes without
degrading performance.
RAID-specific, Time-Limited Error Recovery (TLER) - A feature pioneered by WD,
significantly reduces drive fallout caused by the extended hard drive error-recovery processes
common to desktop drives.
Rotary Acceleration Feed Forward (RAFF
™) - Provides best-in-class 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 250 GB 320 GB 400 GB 500 GB 750 GB
Formatted capacity1 160,041 MB 250,059 MB 320,072 MB 400,088 MB 500,107 MB 750,156 MB
User sectors per drive 312,581,808 488,397,168 625,142,448 781,422,768 976,773,168 1,465,149,168
Model number WD1601ABYS WD2502ABYS WD3201ABYS WD4000ABYS WD5000ABYS WD7500AYYS
Actuator latch/auto park Yes Yes Yes Yes Yes Yes
Bytes per sector (STD) 512 512 512 512 512 512
Dedicated landing zone 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
Interface SATA 3 Gb/s 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 Yes Yes
WD4001ABYS WD5001ABYS
Enterprise Hard Drives
Performance Specifications
Average latency 4.2 ms
Buffer 16 MB
Cache
Read Adaptive
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
3
Weight
1.61 lb (0.73 kg) ±10%
Write Yes
Data transfer rate
Buffer to host 3 Gb/s (maximum)
Buffer to disk
3
98 MB/s (sustained)
Drive ready time 12.0 sec (average)
Error rate
(non-recoverable)
<1 in 1015 bits read
LBA support Yes
MTBF4 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
Power Requirements (ABYS models)
Mode 12V (±10%) 5V (±5%) Power
5
Idle
450 mA 600 mA 8.4W
3
Read/Write 470 mA 660 mA 8.9W
Sleep 6 mA 170 mA 0.9W
Standby 6 mA 170 mA 0.9W
Power Requirements (AYYS models)
Mode 12V (±10%) 5V (±5%) Power
5
Idle
Read/Write 545 mA 685 mA 10.0W
Sleep 6 mA 180 mA 0.97W
Standby 6 mA 180 mA 0.97W
Note: 3.3V Serial ATA power not used in this product.
490 mA 535 mA 8.5W
Environmental Specification
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
Humidity 5–95% RH non-condensing
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
Acoustics (Average)
Idle mode
7
0.008 g2/Hz (300 to 500 Hz)
0.01 g2/Hz (300 to 500 Hz)
3
28 dBA
6
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
Maximum drive capacity model.
4
After 24 power-on hours.
5
Average idle run current and power measured with power supply at nominal voltage and 35°C ambient.
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, Active Power
Save, 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-A10 Feb 2008
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