WD S25
SAS Hard Drives
High performance.
Low power.
SAS storage.
Ultra-fast SAS storage
Low power consumption
Industry-leading reliability
These 2.5-inch SAS drives offer the
powerful combination of enterpriseclass performance and reduced power
consumption required for demanding
high-performance computing and missioncritical environments.
WD S25
SAS Hard Drives
Product Features
Highest performance
in its class
WD S25 delivers 6 Gb/s transfer rates,
sustained sequential data rates of 202
MB/s and high random I/O rates.
Low power consumption
This 2.5-inch SAS drive requires less
than 8 watts to operate. And its small
form-factor allows for more system
airflow resulting in lower cooling costs.
Industry’s highest
reliability rating
With a field-tested 2 million hour MTBF,
this high performance drive is perfect
for enterprise server and enterprise
storage applications.
Ultra-fast SAS storage
The ultra-fast 6 Gb/s SAS interface
enables optimum data reliability,
availability, and scalability.
Enterprise ready
WD S25 SAS hard drives provide up to
900 GB of high performance storage
suitable for both enterprise server and
enterprise storage applications.
Dual port, full duplex
For mission-critical enterprise
Ultra-cool operation
The small form-factor, 70 percent
smaller than 3.5-inch drives, allows
more system airflow resulting in lower
cooling costs. In an environment where
space and power are limited, the WD
S25 drives are an effective solution
for high performance computing
solutions such as power-constrained
data centers, database transaction
processing, and rack, tower, and blade
Environmentally responsible
NoTouch™ ramp load
The recording head never touches the
disk media ensuring significantly less
wear to the recording head and media
as well as better drive protection in
Rotary Acceleration Feed
Forward (RAFF™)
Optimizes operation and performance
when the drives are used in vibrationprone, multi-drive chassis.
In addition to being RoHS compliant,
these drives are built with halogen
reduced components.
Product Specifications
SAS 6 Gb/s
Form factor
Spin speed
10,000 RPM
32 MB
300 GB
450 GB
600 GB
900 GB
2 million hours
Limited Warranty
5 years
Western Digital, WD, the WD logo and Put Your Life On It are registered trademarks in the U.S. and other countries; NoTouch and RAFF are trademarks of Western Digital Technologies, Inc. Other marks may be mentioned herein that belong to other companies. Pictures shown may vary from
actual product. Not all products may be available in all regions of the world. All product and packaging specifications subject to change without notice.
© 2012 Western Digital Technologies, Inc. All rights reserved.
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 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 SAS 6 Gb/s transfer rate calculated according to the SAS specification published by the INCITS T10 organization as of the date of this document. Visit www.t10.org for details.
2178-771138-A03 Jan 2012
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