NEC VERSA LXI - VERSION 10-2000 Manual page 172

SuperDisk™ Drive
Formatted Capacity:
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— Optical diskette — 120 MB
— High Density floppy diskette — 1.44 MB
— Double Density floppy diskette — 720 KB
Data Transfer Rate
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— 120-MB: 680 KB/S (max.)
— 1.44-MB: 150 KB/S (max.)
— 720-KB: 75 KB/S (max.)
Track to track seek rate
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— 120-MB: 20ms (typ)
— 1.44-MB/720-KB: 25ms (typ)
Hard Disk Drive
Specifications vary depending upon model:
Ultra DMA/33 support
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Capacity — Internal 10.x, or 20.x GB
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Drive height — 12.7 mm
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Read/write track-to-track seek rate — 3 ms – 4.5 ms
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Average seek time — 12 ms – 14 ms
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Revolutions per minute — 4000 - 4200
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Data transfer rate
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— 16.6 MB/sec (PIO mode4/DMA mode2)
— 33.3 MB/sec (ultra DMA)
Media data rates — 88.0 bit/sec – 118.0 bit/sec
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Mean Time Between Errors (MTBF) — 300,000 hours
!
Specifications B-5