Western Digital Corp. WD400BB hard drive specifications

Western Digital Caviar 40 GB DMA/ATA-100 (Ultra)

Western Digital - the leader for high quality hard drives, introduces the Caviar - a high performance hard disk drive. This series uses Western Digital's proven technology and quality manufacturing to deliver outstanding performance and reliability. Western Digital hard drives are specifically designed and tested for flawless operation in your equipment. Its large capacity and high speed make it the perfect choice for demanding applications. The Caviar offers superior quality and reliability at an affordable price.

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Manufacturer
Western Digital Corp.

HDD Part Number
WD400BB


Hard drive health monitoring software
ActiveSMART by Ariolic Software. Click to download ActiveSMART

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
40 GB

Interface Type
ATA-100

Buffer Size
2 MB

Features
Shock Guard, Data Lifeguard, Fluid Dynamic Bearing (FDB) motor

Performance

Drive Transfer Rate
100 MBps

Seek Time
8.9 ms (average) / 21 ms (max)

Track-to-Track Seek Time
2 ms

Average Latency
4.2 ms

Spindle Speed
7200 rpm

Reliability

Mean time before failure
500,000 hour(s)

Storage Hard Drive / Non-Recoverable Errors
1 per 10^14

Start / Stop Cycles
40,000

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

Manufacturer Warranty

Service & Support
3 years warranty

Service & Support Details
Limited warranty - Replacement - 3 years

Environmental Parameters

Min Operating Temperature
41 �F

Max Operating Temperature
131 �F

Humidity Range Operating
5 - 85%

Shock Tolerance
65 g @ 2ms half-sine pulse (operating) / 350 g @ 2ms half-sine pulse (non-operating)

Vibration Tolerance
0.25 g @ 5-500 Hz (operating) / 4 g @ 20-500 Hz (non-operating)

Max Altitude Operating
9840 ft


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