Western Digital WD2500SB RE edition EIDE / ATA / PATA Hard Drive
Capacity: 250GB
Spindle Speed: 7,200RPM
Interface Type: IDE / ATA (3.5″)
Disk Size: 3.5″x1.0″ (LFF Hard Drive)
Sustained Throughput (MBps):
Average Seek Time (read/write ms): 8.9 / 10.9
Electrical Interface Speed: EIDE / Ultra ATA/100 – 100MBps
On-Board Cache: 8MB
Physical Specifications | |
Formatted Capacity 1 | 251,000 MB |
Interface | 40-pin EIDE |
Actuator Type | Rotary Voice Coil |
Number of Disks | 3 |
Data Surfaces | 6 |
Number of Heads | 6 |
Bytes Per SECTOR![]() |
512 |
User SECTORS![]() |
490,234,752 |
Servo Type | Embedded |
Performance Specifications | |
Average Seek 1 – Read – Write |
8.9 ms average 10.9 ms average |
Track-to-Track Seek | 2.0 ms average |
Full Stroke Seek | 21 ms average |
INDEX![]() |
8.3 ms (nominal) |
Average Latency | 4.2 ms (nominal) |
Rotational Speed | 7200 RPM (nominal) |
Buffer Size | 8 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 |
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