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WD Raptor X
SATA Hard Drives
Physical Specifications
150 GB
1
Formatted capacity
150,039 MB
User sectors per drive
293,046,768
WD model number
WD1500AHFD
SATA latching connector
Yes
Bytes per sector (STD)
512
Form factor
3.5-inch
Interface
SATA 1.5 Gb/s
2
RoHS compliant
Yes
Performance Specifications
Average latency
2.99 ms
Buffer
16 MB
Cache
Read
Adaptive
Write
Yes
Data transfer rate (buffer to host) 1.5 Gb/s (maximum)
Drive ready time
7.0 sec (average), 10 sec (maximum)
Error rate (non-recoverable)
<1 in 10
LBA support
Yes
Rotational speed
10,000 RPM
Seek time
Read
4.6 ms (average)
Write
5.2 ms (average)
Track-to-track seek time
Read
0.3 ms (average), 0.6 (maximum)
Write
0.4 ms (average), 0.75 (maximum)
Start/stop cycles
20,000 minimum
4
Limited warranty
5-year
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 burst rate running the specified SATA transfer mode.
4
Standard five-year limited warranty, unless otherwise required by law. For extended warranty information,
visit our Web site at support.wdc.com.
3
15
bits read
For service and literature:
support.wdc.com
www.westerndigital.com
800.ASK.4WDC
North America
949.672.7199
Spanish
+800.6008.6008 Asia Pacific
+31.20.4467651 EMEA
Western Digital and WD Raptor are
registered trademarks; and WD, the WD
logo, RAFF, and FIT Lab 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.
© 2007 Western Digital Technologies, Inc.
All rights reserved.
Western Digital
20511 Lake Forest Drive
Lake Forest, California 92630
U.S.A.
2879-001164-A02 Aug 2007
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