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System DMA
Hard Drives
Models DBCA-20648 DBCA-206480 DCXA-21000
Capacity Per Drive
4.8-GB 6.4-GB 10.0-GB
Drive Type U-DMA/33 U-DMA/33 U-DMA/33
Logical Configuration
Cylinders
Heads
Sectors per Track
Bytes per Sector
10068
3
63
512
13424
4
63
512
16383
6
63
512
Seek Times
(Typical, including settling in ms)
Single Track
Full Stroke
Read 13ms
Write 14ms
Read 2.5ms
Write 3.0ms
Read 23ms
Write 24ms
Read 13ms
Write 14ms
Read 2.5ms
Write 3.0ms
Read 23ms
Write 24ms
Read 12ms
Write 14ms
Read 2.5ms
Write 3.0ms
Read 23ms
Write 24ms
Transfer Rate
At interface
16.6MB/s 16.6MB/s 16.6MB/s
Hard Drives, continued
Models MHH20 48AT MHH20 64AT MHG2 102AT
Capacity Per Drive
4.8-GB 6.4-GB 10.0-GB
Drive Type U-DMA/33 U-DMA/33 U-DMA/33
Logical Configuration
Cylinders
Heads
Sectors per Track
Bytes per Sector
Not Available
Not Available
Not Available
Not Available
13424
4
63
512
16383
6
63
512
Seek Times
(Typical, including settling in ms)
Single Track
Full Stroke
Read N/A
Write N/A
Read N/A
Write N/A
Read N/A
Write N/A
Read 13ms
Write 14ms
Read 2.5ms
Write 3.0ms
Read 23ms
Write 24ms
Read 13ms
Write N/A
Read 1.5ms
Write N/A
Read 23ms
Write N/A
Transfer Rate
At interface
15.8MB/s 16.6MB/s 15.8MB/s
Hard Drives, continued
Models DK238 A-43 DK228 A-65 DK239 A-65
Capacity Per Drive 4.3-GB 6.4-GB (12.7mm) 6.4-GB
Drive Type U-DMA/33
Logical Configuration
Cylinders
Heads
Sectors per Track
Bytes per Sector
Not Available
Not Available
Not Available
Not Available
13424
4
63
512
16383
6
63
512
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