WD Caviar 8.4 GB EIDE Hard Drive WD84AA

 
Recommended Setup Parameters
Cylinders 16383
Heads 16
Sectors/Track 63
Landing Zone 16383
WPC 16383
Physical Specifications
Formatted Capacity* 8455 MB
Interface 40-pin EIDE
Actuator Type Rotary Voice Coil
Number of Platters 1
Data Surfaces 2
Number of Heads 2
Bytes Per Sector 512
User Sectors Per Drive 16,514,064
Servo Type Embedded
Recording Method Rate 16/17 PRML
ECC Reed Solomon
Head Park Automatic
Performance Specifications
Average Seek (Read) 9.5 ms typical, 15 ms maximum
Average Seek (Write) 11.5 ms typical, 17 ms maximum
Track to Track Seek 2.0 ms typical, 5 ms maximum
Full Stroke Seek (Read) 19 ms typical, 23 ms maximum
Index Pulse Period 11.11 ms (nominal)
Average Latency 5.5 ms (nominal)
Rotational Speed 5400 RPM (nominal)
Controller Overhead 0.3 ms average
Transfer Rate (Buffer to Host) 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)
Transfer Rate (Buffer to Disk) 138.56 Mbits/s minimum
244.0 Mbits/s maximum
Interleave 1:1
Buffer Size 2 MB
Error Rate (Non-Recoverable) <1 in 1014 bits read
Spindle Start Time
- From Power-on to Drive Ready
6 s typical, 16 s maximum
Contact Start/Stop Cycles (CSS) 40,000 minimum

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