Western Digital Corp. WD2500KS hard drive specifications

Western Digital Caviar SE16 SATA II 250 GB

WD Caviar Blue16 SATA II hard drives combine 300 MB/s transfer rate and 16 MB cache for industry leading performance. Yes, these reliable drives are lightning fast, but they still deliver technologically advanced acoustics and cool operation. Fast - The one-two performance punch of 300 MB/s transfer rate, state-of-the-art performance for SATA drives, and 16 MB cache make the WD Caviar Blue16 family the fastest desktop-class hard drives available. Cool - Cool operation means the highest reliability even in high-heat environments such as personal video recorders. That's why these drives, the coolest on the market, are the drive of choice for the world's leading consumer electronics manufacturers as well as the world's leading PC makers. Quiet - The technology that Tom's Hardware called "very fast and nearly silent" is repeated in this family of drives. Western Digital has minimized noise to levels virtually below the threshold of human hearing with WhisperDrive technology. And to cut seek noise, SoftSeek technology streamlines read/write seeking algorithms, resulting in the drive operating more efficiently when accessing and writing data.

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Western Digital Corp.

HDD Part Number

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


Device Type
Hard drive - Internal hard drive

4 in

5.8 in

1 in

1.3 lbs

Hard Drive

Form Factor

250 GB

Interface Type
Serial ATA-300

Buffer Size
16 MB

Soft Seek, SecureConnect, FlexPower, WhisperDrive, Shock Guard, Data Lifeguard


Drive Transfer Rate
300 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


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

Start / Stop Cycles

Storage Controller


Expansion / Connectivity

1 x Serial ATA-300 - 7 pin Serial ATA

Compatible Bays
1 x Internal - 3.5" x 1/3H

Compatible Slots
x None


Microsoft Certifications
Works with Windows Vista

Manufacturer Warranty

Service & Support
3 years warranty

Service & Support Details
Limited warranty - 3 years

Environmental Parameters

Humidity Range Operating
5 - 95%

Shock Tolerance
65 g @ 2ms half-sine pulse (operating) / 250 g @ 2ms half-sine pulse (non-operating)

Vibration Tolerance
0.75 g @ 20-300 Hz (operating) / 4 g @ 20-500 Hz (non-operating)