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EIDE and Serial ATA 1.0
3.5-inch/1-inch
7200 RPM
120, 160 and 250 GB
EIDE
WD1200SB
WD1600SB
WD2500SB
SATA
WD1200SD
WD1600SD
WD2500SD
Note: All products may not be available in all regions of the world.
Because desktop drives offer high capacity at a lower-than-SCSI cost, an unprecedented number of
RAID systems are being designed around desktop drives. But life in a desktop computer doesn’t compare to the extreme environment in an always-on, high duty cycle RAID system. What’s needed is a drive engineered to thrive in a high-intensity RAID system while still offering traditional desktop value.
That drive is the WD Caviar RE. Designed and manufactured to enterprise-class standards,
WD Caviar RE drives provide enhanced reliability in a 24x7, high duty cycle environment. In addition, they offer a RAID-specific time-limited error recovery feature that improves compatibility with RAID adapters. WD Caviar RE hard drives are ideal for RAID server applications such as video surveillance, enterprise backup, document management, scientific computing, and similar demanding storage environments.
Product Benefits
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Reliability in high duty cycle environments – utilizing enterprise-class manufacturing processes, these drives are designed with enhanced reliability in a 24x7, continuous duty environment.
RAID-specific time limited error recovery – improves compatibility with RAID adapters and prevents drive fallout caused by extended drive error-recovery processes.
8 MB cache – provides a higher percentage of cache hits and significantly faster time to data than industry-standard 2 MB versions.
Fluid Dynamic Bearing (FDB) technology – improves hard drive reliability; reduces heat, vibration, and noise.
Improved power controller – consumes less power and generates low heat.
Data Lifeguard Tools ™ – software utility that works in conjunction with the embedded
Data Lifeguard ™ features (including shock protection, an environmental protection system, and embedded error detection and repair features) to make hard drive installation, management, and diagnostics simple and worry-free.
SATA-specific Features
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FlexPower ™ – connector technology that accepts power from either industry-standard or new SATA power supplies.
Hot plug support – allows swapping of hard drives without having to power down the system or reboot; promotes system design flexibility, data availability, and serviceability.
Backplane compatibility – uses the SATA industry standard connector which includes alignment ears and 3-stage electrical mating sequence, designed specifically for backplanes and hot pluggability.
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SATA latching connector – provides a secure connection between the hard drive and the cable connector via a locking latch mechanism.
Recommended: Western Digital's Serial ATA cable with SecureConnect ™ provides a 500 percent stronger cable-to-drive connection than first-generation SATA hard drives and cables; for use with Western
Digital SATA drives only.
IMPORTANT: Because of the time-limited error recovery feature, this product is intended for server applications and is not recommended for use in desktop systems.
EIDE Hard Drives
Physical Specifications
120 GB 160 GB 250 GB
Model number
Interface
Form factor
Formatted capacity 1
User sectors per drive
WD1200SB WD1600SB WD2500SB
EIDE 100 MB/s EIDE 100 MB/s EIDE 100 MB/s
3.5-inch
120,034 MB
3.5-inch
160,041 MB
3.5-inch
250,059 MB
234,441,648 312,581,808 488,397,168
Bytes per sector (STD) 512
Dedicated landing zone Yes
512
Yes
512
Yes
Actuator latch/auto park Yes
Warranty 2 3-year
Yes
3-year
Yes
3-year
Performance Specifications
Data Transfer Rate
-Buffer to host 3
-Buffer to disk
100 MB/s
61 MB/s sustained
Read seek
Track-to-track seek 4
Full stroke read seek 4
Average latency
Rotational speed
Read cache
Write cache
Buffer
Drive ready time
Master/slave support
IORDY support
LBA support
Error rate
(non-recoverable)
8.9 ms (average)
2.0 ms (average)
21 ms (average)
4.2 ms
7200 RPM
Adaptive
Yes
8 MB
7.0 sec average
Yes
Yes
Yes
<1 in 10 14 bits read
WD Serial ATA cable with SecureConnect
SATA Hard Drives
Physical Specifications
120 GB 160 GB 250 GB
Model number
Interface
Form factor
Formatted capacity
WD1200SD
SATA 1.5 Gb/s SATA 1.5 Gb/s SATA 1.5 Gb/s
3.5-inch
120,034 MB
WD1600SD
3.5-inch
160,041 MB
WD2500SD
3.5-inch
250,059 MB
User sectors per drive 234,441,648 312,581,808 488,397,168
Bytes per sector (STD) 512 512 512
Dedicated landing zone Yes
Actuator latch/auto park Yes
Warranty 3-year
Yes
Yes
3-year
Yes
Yes
3-year
Performance Specifications
Data Transfer Rate
-Buffer to host 5
-Buffer to disk
150 MB/s
61 MB/s sustained
Read seek
Track-to-track seek
Full stroke read seek
Average latency
Rotational speed
Read cache
Write cache
Buffer
Drive ready time
LBA support
Error rate
(non-recoverable)
8.9 ms (average)
2.0 ms (average)
21 ms (average)
4.2 ms
7200 RPM
Adaptive
Yes
8 MB
9.0 sec average
Yes
<1 in 10 14 bits read
Western Digital's Serial ATA cable with SecureConnect provides a 500 percent stronger cable-to-drive connection than first-generation SATA hard drives and cables; for use with Western Digital SATA drives only.
1 Western Digital defines a megabyte (MB) as 1,000,000 bytes and a gigabyte (GB) as 1,000,000,000 bytes. Some operating systems use the binary numbering system which yields
2 a lower reported capacity.
Three-year standard warranty on bulk WD Caviar RE hard drives. This standard warranty may be subject to variations imposed by local law or regulations.
3 Maximum burst rate running the specified Ultra ATA transfer mode.
4 On reads and writes.
5 Effective maximum transfer rate running Serial ATA 1.0.
For service and literature:
800.
ASK .4
WDC U.S.A.
+31.20.4467651
Europe
949.672.7199
Spanish support.wdc.com
www.westerndigital.com
Western Digital, the Western Digital logo, and WD Caviar are registered trademarks, and
WD, Data Lifeguard, Data Lifeguard Tools,
SecureConnect, FlexPower, 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.
© 2004 Western Digital Technologies, Inc.
All rights reserved.
Western Digital
20511 Lake Forest Drive
Lake Forest, California 92630 U.S.A.
2879-001119-A02 06/04
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