20 GB Western Digital IDE
Formatted Capacity 1 | 20,020 MB |
Interface | 40-pin EIDE |
Actuator Type | Rotary Voice Coil |
Bytes Per Sector | 512 |
User Sectors Per Drive | 39,102,336 |
Servo Type | Embedded |
ECC | Reed Solomon |
Head Park 2 | Automatic |
Jumper Setting Information | Ten Pin Drive |
Performance Specifications
Average Seek - Read - Write |
12.8 ms typical 13.8 ms typical |
Track-to-Track Seek | 2.0 ms average |
Full Stroke Seek | 28.5 ms average |
Index Pulse Period | 8.3 ms (nominal) |
Average Latency | 5.35 ms (nominal) |
Rotational Speed | 5400 RPM (nominal) |
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) 695 Mbits/s maximum |
Interleave | 1:1 |
Buffer Size | 2 MB |
Error Rate - Unrecoverable | 1 in 1014 bits read |
Spindle Start Time - From Power-on to Drive Ready 1 - From Power-on to Rotational Speed 2 |
6.0 s average 4.5 s average |
Spindle Stop Time | 5.1 s average |
Contact Start/Stop Cycles (CSS) | 40,000 minimum |