Western Digital RE4-GP user manual

WD RE4-GP
Power-Saving Hard Drives
Faster Performance
Reduced Power Consumption
Lower Cost of Ownership
Enterprise Hard Drives
Interface
SATA
Width/Height
3.5-inch/1-inch
Rotational Speed
IntelliPower
Capacities
2 TB
Model Numbers
Note: Not all products
may be available in all
regions of the world.
Available in capacities up to 2 TB, WD RE4-GP SATA hard drives offer data-hungry organizations massive capacity with significant power savings and lower cost of ownership compared to competitors’ standard enterprise-class drives. Based on WD's exclusive GreenPower™ platform, these drives are designed to deliver power savings as the primary attribute and are equipped with 64 MB cache, dual processors, and IntelliPower™, a fine-tuned balance of spin speed, transfer rate, and caching algorithms designed to deliver both significant power savings and solid performance.
Product Benefits
Faster — 64 MB cache, dual processors, and increased areal density yield twice the
processing power which results in up to a 25 percent performance improvement over the previous generation.
Greener — Improvements in our power-conserving technologies — IntelliSeek™, IntelliPark™, and IntelliPower™ — deliver improved power consumption over our previous generation of WD RE-GP drives.
Improved rotary vibration tolerance — Optimized drive mechanics, system characterization, and process validation yields unmatched performance in high vibration environments.
Lower total cost of ownership — Large data-hungry financial institutions and web service providers can save up to $10 savings per drive per year in electricity costs (U.S). A large data center with 10,000 drives could realize up to $100,000 in savings per year.
24x7 reliability — With 1.2 million hours MTBF, these drives have the highest available reliability rating on a high-capacity drive.
Product Features
IntelliPower — A fine-tuned balance of spin speed, transfer rate, and caching algorithms
designed to deliver both significant power savings and solid performance. Additionally, GreenPower simultaneously resulting in faster system readiness.
IntelliSeek Calculates optimum seek speeds to lower unnecessary power consumption, noise, and vibration.
IntelliPark — Delivers lower power consumption by automatically unloading recording heads during idle to reduce aerodynamic drag, and by disengaging read/write channel electronics.
Active Power Management WD GreenPower drives monitor work load and automatically invoke idle mode whenever possible to further reduce unnecessary power consumption. Drive recovery time from idle mode is less than one second, providing seamless power management between the drive and the host controller.
StableTrac
and stabilize platters for accurate tracking during read and write operations. RAID-specific time-limited error recovery (TLER) — Pioneered by WD, this feature
prevents drive fallout caused by the extended hard drive error-recovery processes common to desktop drives.
Rotary Acceleration Feed Forward (RAFF™) optimizes operation and performance when the drives are used in vibration-prone multi-drive systems such as rackmounted servers.
drives consume less current during start up allowing more drives to spin up
Secures the motor shaft at both ends to reduce system-induced vibration
WD RE4-GP
Power Saving Hard Drives
Enterprise Hard Drives
Specifications
Model number Interface Formatted capacity User sectors per drive Native command queuing SATA latching connector Actuator latch/auto park Form factor RoHS compliant
Performance
2
1
2 TB
WD2002FYPS SATA 3 Gb/s 2,000,398 MB 3,907,029,168
Yes Yes Yes
3.5-inch Yes
Data transfer rate (max)
Buffer to host Host to/from drive (sustained)
3 Gb/s 110 MB/s
Cache (MB) 64 Rotational speed (RPM) IntelliPower Average drive ready time (sec) 17
Configuration/Organization
Heads/disks 8/4 Bytes per sector (STD) 512
Reliability/Data Integrity
Load/unload cycles Non-recoverable read errors per bits read <1 in 1015 Limited warranty (years)
Power Management
3
4
600,000
5
12VDC (A, max) 1.8 Average power requirements (W)
Read/Write Idle Standby Sleep
Environmental Specifications
Temperature (°C)
Operating Non-operating
Shock (Gs)
Operating (2 ms, read) Operating (2 ms, read/write) Non-operating (2 ms)
Average acoustics (dBA)
Idle mode Performance seek mode Quiet seek mode
Physical Dimensions
6
5
6.8
3.7
0.8
0.8
5 to 55
-40 to 70
30 65 300
25 29 26
Height (in./mm, max) 1.028/26.1 Length (in./mm, max) 5.787/147 Width (in./mm, ± .01 in.) 4/101.6 Weight (lb./kg, ± 10%) 1.61/0.73
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 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
Controlled unload at ambient condition.
4
The term of the limited warranty may vary by region. Visit support.wdc.com/warranty for details.
5
No non-recoverable errors during operating test or after non-operating tests.
6
Sound power level.
For service and literature:
support.wdc.com www.westerndigital.com
800.ASK.4WDC North America
800.832.4778 Spanish +800.6008.6008 Asia Pacific
00800.27549338 Europe
+31.880062100 Europe/Middle East/Africa
Western Digital, WD, and the WD logo are registered trademarks in the U.S. and other countries; and IntelliSeek, IntelliPower, GreenPower, StableTrac, IntelliPark, 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.
© 2009 Western Digital Technologies, Inc. All rights reserved.
Western Digital 20511 Lake Forest Drive Lake Forest, California 92630 U.S.A
2879-701312-A00 Apr 2009
(toll free where available)