Western Digital Corp. WD400JB hard drive specifications
Western Digital Caviar SE EIDE 40 GB Hard Drive
WD Caviar 7200 hard drives deliver data to users faster than any desktop hard drive before, being a perfect solution for activities requiring high-performance storage such as computer gaming, digital video editing, and file server applications. The WD Caviar Special Edition family is equipped with an 8 MB buffer - the largest buffer available today in a desktop EIDE hard drive, delivering data to users faster than any hard drive in its class. Data Lifeguard is an expanded set of data protection tools that includes shock protection, an environmental protection system, and embedded error detection and repair features that automatically find, isolate, and repair problem areas that may develop over the extended use of the hard drive. With these enhanced data reliability features, the drive can perform more accurate monitoring and error repair and deliver exceptional data security.
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Manufacturer
HDD Part Number
WD400JB
Hard drive health monitoring software
General
Device Type
Hard drive - Internal hard drive
Width
4 in
Depth
5.8 in
Height
1 in
Weight
0.9 lbs
Hard Drive
Form Factor
Capacity
40 GB
Interface Type
ATA-100
Buffer Size
8 MB
Features
Shock Guard, Data Lifeguard
Performance
Drive Transfer Rate
100 MBps
Internal Data Rate
73.9 MBps
Seek Time
8.9 ms (average) / 21 ms (max)
Track-to-Track Seek Time
2 ms
Average Latency
5.5 ms
Spindle Speed
7200 rpm
Reliability
Storage Hard Drive / Non-Recoverable Errors
1 per 10^15
Start / Stop Cycles
50,000
Storage Controller
Type
None
Expansion / Connectivity
Interfaces
1 x ATA-100 - 40 pin IDC
Compatible Bays
1 x Internal - 3.5" x 1/3H
Compatible Slots
x None
Miscellaneous
Compliant Standards
RoHS
Power
Power Device
None
Software / System Requirements
OS Required
Microsoft Windows 2000 / XP , Microsoft Windows Vista
Environmental Parameters
Humidity Range Operating
5 - 85%
Shock Tolerance
20 g @ 2ms half-sine pulse (operating) / 200 g @ 2ms half-sine pulse (non-operating)
Vibration Tolerance
0.75 g @ 20-300 Hz (operating) / 4 g @ 20-500 Hz (non-operating)
Sound Emission
35 dBA
Max Altitude Operating
9840 ft
0.0873