Western Digital WD4000YR Internal Hard Drive Data Storage

WD produces the world's most reliable SATA drives. Designed and manufactured
to enterprise reliability standards, these drives offer the best combination of reliability, high capacity and performance for high duty cycle enterprise applications.

Key Features
Native Command Queuing (NCQ) - Dynamically re-orders requests to enhance drive performance.

16 MB cache and 1.5 Gb/s data transfer rate

Rotary Acceleration Feed Forward (RAFF™) optimizes operation and
performance in vibration-prone environments such as rack-mounted servers or network storage.

RAID-specific time-limited error recovery (TLER), WD's unique feature to prevent drive fallout caused by the extended hard drive error-recovery processes common to desktop drives.

1.2 million hours MTBF, 24X7 100% duty cycle - the highest available
reliability rating on high-capacity drives.

5-year warranty.

High Capacity: 400 GB of storage packed with enterprise-class features at a low cost-per-gigabyte.

Ideal for
Servers

Network attached storage

Scientific computing

Life sciences

Video surveillance

Enterprise backup

Document/image management

Audio/video media applications

Other demanding write-intensive applications

Note: For high performance desktop applications, consider WD Caviar SE16 drives.