Transcript
SATA 1.5 Gb/s or EIDE
3.5-inch/1-inch
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. 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 7200 RPM
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160 to 320 GB !
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EIDE WD3200SB WD2500SB WD1600SB SATA WD3200SD WD2500YD WD2500SD WD1600YD WD1600SD
SATA-specific Features !
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Note: Not all products may be available in all regions of the world.
Reliability in high duty cycle environments – utilizing enterprise-class manufacturing processes, these drives are designed with enhanced reliability in a 24x7, high duty cycle environment. Built to last – made for years of high-performance operation around the clock. Reliability demonstration testing indicates a Mean Time Between Failure (MTBF) of one million hours. RAID-specific time limited error recovery – improves error handling coordination with RAID adapters and prevents drive fallout caused by extended drive error-recovery processes. Fluid Dynamic Bearing (FDB) motor – 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. 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. SATA latching connector – provides a secure connection between the hard drive and the cable connector via a locking latch mechanism.
EIDE Hard Drives Performance Specifications Data Transfer Rate -Buffer to host2 100 MB/s -Buffer to disk 61 MB/s sustained
Physical Specifications Model number Interface Form factor Formatted capacity1 User sectors per drive Bytes per sector (STD) Dedicated landing zone Actuator latch/auto park
160 GB
250 GB
320 GB
WD1600SB EIDE 3.5-inch 160,041 MB 312,581,808 512 Yes Yes
WD2500SB EIDE 3.5-inch 250,059 MB 488,397,168 512 Yes Yes
WD3200SB EIDE 3.5-inch 320,072 MB 625,142,448 512 Yes Yes
Read seek Track-to-track seek3 Full stroke read seek3 Average latency Rotational speed Read cache Write cache Buffer MTBF4 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 1,000,000 hours 7.0 sec average Yes Yes Yes <1 in 10 14 bits read
SATA Hard Drives Physical Specifications Model number Interface Form factor Formatted capacity User sectors per drive Bytes per sector (STD) Dedicated landing zone Actuator latch/auto park
160 GB
160 GB
250 GB
250 GB
320 GB
WD1600SD SATA 1.5 Gb/s 3.5-inch 160,041 MB 312,581,808 512 Yes Yes
WD1600YD SATA 1.5 Gb/s 3.5-inch 160,041 MB 312,581,808 512 Yes Yes
WD2500SD SATA 1.5 Gb/s 3.5-inch 250,059 MB 488,397,168 512 Yes Yes
WD2500YD SATA 1.5 Gb/s 3.5-inch 250,059 MB 488,397,168 512 Yes Yes
WD3200SD SATA 1.5 Gb/s 3.5-inch 320,072 MB 625,142,448 512 Yes Yes
Performance Specifications Data Transfer Rate 150 MB/s -Buffer to host5 -Buffer to disk 61 MB/s sustained Read seek Track-to-track seek3 Full stroke read seek3 Average latency Rotational speed Read cache Write cache Buffer MTBF4 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 (WD1200SD, WD1600SD, WD2500SD, WD3200SD) 16 MB (WD1600YD, WD2500YD) 1,000,000 hours 9.0 sec average Yes <1 in 10 14 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 Caviar are registered trademarks; and WD, the WD logo, 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. © 2005 Western Digital Technologies, Inc. All rights reserved. Western Digital 20511 Lake Forest Drive Lake Forest, California 92630 U.S.A. 2879-001119-A07 Sep 2005
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WD 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 a lower reported capacity. 2 Maximum burst rate running the specified Ultra ATA transfer mode. 3 On reads and writes. 4 80% duty cycle with 100% power on hours. 5 Effective maximum transfer rate running SATA 1.5 Gb/s.
