Compaq 420CX 486 DX4/75 MHZ 420 MB 8 MB 10.4 Personal Computer User Manual


 
Drive Type 65 (soft) 65 (soft) 65 (soft)
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Drive Height:
With drive frame 12.7 mm 12.7 mm 12.7mm
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Drive Size:
Inches 2.5 x 0.5 2.5 x 0.5 2.5 x 0.5
Centimeters 6.3 x 1.3 6.3 x 1.3 6.3 x1.3
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Transfer Rate:
Media (Mb/s) 21.07 to 35.9 21.07 to 35.9 26.9 to 39.5
Interface (MB/s) 4.0 4.0 11.1
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Sector Interleave 1:1 1:1 1:1
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Typical Seek Time
(including settling):
Single Track (ms) 5.0 5.0 4.0
Average (ms) 17.0 17.0 14.0
Full Stroke (ms) 24.0 24.0 24.0
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Disk Rotational
Speed 4500 rpm 4500 rpm 4000 rpm
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Physical
Configuration:
Cylinders 1704 1704 3477
Data Heads 4 4 2
Sectors/Track 54 to 92 54 to 92 80 to 120
Bytes/Sector 512 512 512
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Logical
Configuration:
Cylinders 538 723 682
Data Heads 10 11 16
Sectors/Track 16 63 63
Bytes/Sector 512 512 512
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Buffer Size (KB) 96 96 64
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Table 6-8b. Hard Drives
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Model 420 MB 540 MB 720 MB
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Formatted Capacity
Per Drive (MB):
Physical 421.1 541.9 722.5
Logical 421.1 541.9 722.5
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Drive Type 65 (soft) 65 (soft) 65 (soft)
---------------------------------------------------------------------------
Drive Height:
With drive frame 12.7 mm 12.7 mm 12.7 mm
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Drive Size:
Inches 2.5 x 0.5 2.5 x 0.5 2.5 x 0.5
Centimeters 6.3 x 1.3 6.3 x 1.3 6.3 x 1.3
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Transfer Rate: