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Hard Disk Drive Interface
Item Specification
Vendor & Model
Name
HITACHI
EUCALYPTUS
DK23EA-20/
HGST MORAGA
IC25N020ATMR04-0
08K0632
IBM CASCADE
IC25N020ATCS04-0
07N8325
HITACHI DK23EA-30
HGST MORAGA
IC25N030ATMR04-0
TOSHIBA NEPTUNE
MK3021GAS
HITACHI DK23EA-40
HGST MORAGA
IC25N040ATMR04-0
HITACHI DK23EA-60
HGST MORAGA
IC25N060ATMR04-0
TOSHIBA NEPTUNE
MK6021GAS
Capacity (MB) 20000 30000 40000 60000
Bytes per sector 512 512 512 512
Logical heads 16 16 16 16
Logical sectors 63 63 63 63
Drive Format
Logical cylinders 42091/16383/16383 42091/16383/47080 42091/16383 42091/16383/47080
Physical read/write
heads
2/1/2 3/2/2 2/2 4/3/4
Disks 1/1/1 2/1/1 1/1 2/2/2
Spindle speed (RPM) 4200RPM
Performance Specifications
Buffer size 2MB 2MB 2MB 2MB
Interface ATA-5 for other vendors /ATA-6 for HGST
Data transfer rate
(disk-buffer, Mbytes/
s)
19.4-37.1/350/245 22.1-42.8 for Hitachi/
350 for HGST
19.4-37.1 for Hitachi/
350 for HGST
22.1-42.8 for Hitachi/
350 for HGST
Data transfer, rate
(host~buffer, Mbytes/
s)
100 MB/Sec
DC Power Requirements
Voltage tolerance 5 +/- 5%
CD-ROM Interface
Items Specification
Vendor & Model Name Mitsumi SR-244W1
Performance Specification
Transfer rate Read Sustained:
1545~3600 KB/sec
Programmed I/O:
16.7 MB/sec Max. (Mode 0~4)
Multi-word DMA:
16.7 MB/sec Max. (Mode 0~2)
Ultra DMA:
33.3MB/sec Max.
Access time (typ.) Random: 115 ms
Full Stroke: 250 ms
Rotation speed 5136 rpm
Data Buffer Capacity 128 KB