Western Digital Corp. WD4000YR hard drive specifications
Western Digital Caviar RE2 400GB Hard Drive
With 1.2 million hours MTBF, server duty cycle, next-generation SATA technology and state-of-the-art vibration tolerance, WD RE2 7200 RPM drives offer the best combination of reliability, high capacity and performance for enterprise applications. RAID-specific time-limited error recovery (TLER) - this feature, unique to WD, 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 rack-mounted servers and network storage. 1.2 million hours MTBF, 24x7 100% duty cycle - the highest available reliability rating on high capacity drives.
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Manufacturer
HDD Part Number
WD4000YR
Hard drive health monitoring software
General
Device Type
Hard drive - Internal hard drive
Width
4 in
Depth
5.8 in
Height
1 in
Weight
1.3 lbs
Hard Drive
Form Factor
Capacity
400 GB
Interface Type
Serial ATA-150
Buffer Size
16 MB
Features
Native Command Queuing (NCQ), Time-Limited Error Recovery (TLER), SecureConnect, FlexPower, Rotary Acceleration Feed Forward (RAFF)
Performance
Drive Transfer Rate
150 MBps
Internal Data Rate
65 MBps
Seek Time
8.7 ms (average) / 21 ms (max)
Track-to-Track Seek Time
0.9 ms
Average Latency
4.2 ms
Spindle Speed
7200 rpm
Reliability
Mean time before failure
1,200,000 hour(s)
Storage Hard Drive / Non-Recoverable Errors
1 per 10^15
Start / Stop Cycles
50,000
Expansion / Connectivity
Interfaces
1 x Serial ATA-150 - 7 pin Serial ATA
Compatible Bays
1 x Internal - 3.5" x 1/3H
Miscellaneous
Microsoft Certifications
Works with Windows Vista
Manufacturer Warranty
Service & Support
5 years warranty
Service & Support Details
Limited warranty - Parts and labor - 5 years - Bring-in
Environmental Parameters
Humidity Range Operating
5 - 95%
Vibration Tolerance
0.75 g @ 20-300 Hz (operating) / 4 g @ 20-500 Hz (non-operating)
Sound Emission
29 dBA
0.0793