Western Digital Caviar Blue SATA Hard Drive WD2500AAJS

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Western Digital Part #/MPN: WD2500AAJS

DiscTech Item #: WDC-WD2500AAJS-RF-OE

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    This item is currently (nearly) out of stock. It may be possible to arrange fast shipment. If you need it urgently call us. Otherwise, it usually ships within 1 week.


Capacity: 250GB

Speed: 7,200RPM

Interface Types: SATA

Form Factor: 3.5inx1.0in LFF Hard Drive

Sector Size: 512 / 512e

Average Seek Time: 8.9 / 10.9

Electrical Interface: SATA 300 - 3.0Gbps

On-Board Cache: 8MB

Physical Specifications
Formatted Capacity 1250,059 MB
Actuator latch/auto park Yes
Number of Heads6
Bytes Per Sector512
User Sectors Per Drive488,397,168
Servo TypeEmbedded

Performance Specifications
Average Seek 1

- Read

- Write
8.9 ms average

10.9 ms average
Track-to-Track Seek2.0 ms average
Full Stroke Seek 21 ms average
Index Pulse Period8.3 ms (nominal)
Average Latency4.2 ms (nominal)
Rotational Speed7200 RPM (nominal)
Buffer Size8 MB
Data Transfer Rate (maximum)

- Buffer to Host

- Buffer to Disk

100 MB/s (Mode 5 Ultra ATA)

66.6 MB/s (Mode 4 Ultra ATA)

33.3 MB/s (Mode 2 Ultra ATA)

16.6 MB/s (Mode 4 PIO)

16.6 MB/s (Mode 2 multi-word DMA)

748 Mbits/s maximum

Click here to view the manufacturer's item description/brochure

Weight: 1.8 lb

Warranty: 1 Year DiscTech


Condition Levels Explained

The product has been built, rebuilt or repaired at the original manufacturer's factory (Note we NEVER sell 3rd party repaired items, as we do not find them to be reliable enough). Often these products are extremely close to new in condition, except that they contain at least one recycled or repaired component. Failure rates are often lower on these devices since they have been far more thoroughly tested than new items. Watch a video about our refurbishing process

1 Year DiscTech Warranty

Product Warranties Explained

The product has a DiscTech warranty for the time period specified. View our limited warranty

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