Western Digital Corp. WD2500PB hard drive specifications

WD Caviar Blue WD2500PB - hard drive - 250 GB - ATA-100

Western Digital's Special Edition hard drives are designed to maximize desktop computer performance for activities requiring high-performance storage such as computer gaming, digital video editing, and file server applications. Offering the largest capacities, the Western Digital's 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. The Special Edition hard drive provides a higher percentage of cache hits and significantly faster time to data than industry-standard 2 MB versions. Within the complex operations of hard drives, the buffer is used to hold the results of recent reads from the disk, and also to "pre-fetch" information that is likely to be requested in the near future. The use of an increased buffer improves the performance by reducing the number of physical accesses to the disk and allowing data to stream from the disk uninterrupted by mechanical operations.

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Manufacturer
Western Digital Corp.

HDD Part Number
WD2500PB


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
250 GB

Interface Type
ATA-100

Buffer Size
8 MB

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

Compliant Standards
S.M.A.R.T.

Performance

Drive Transfer Rate
100 MBps

Internal Data Rate
93.5 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

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

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

Manufacturer Warranty

Service & Support
3 years warranty

Service & Support Details
Limited warranty - 3 years

Environmental Parameters

Sound Emission
34 dBA


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