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Appendix A - Technical Specifications
Mass Storage Specifications
Hard Disk Drive
The hard disk drive can be removed by the user for easy upgrades.
Hard drive manufacturers are subject to change without notice.
Table 17 - Hard Disk Drive Specifications
810-million-byte
Hard Drive
1.44-billion-byte
Hard Drive
2.1-billion-byte
Hard Drive
Manufacturer Toshiba IBM Toshiba
Size 12.7-mm (2.5-in) 12.7-mm (2.5-in) 12.7-mm (2.5-in)
Interface ATA-2 Interface ATA-3 Interface ATA-3 Interface
Recording Method Peek Detect PRML (Partial Response
Maximum Likelihood)
PRML (Partial
Response Maximum
Likelihood)
Heads Thin Film MR (Magneto Resistive) MR (Magneto
Resistive)
Average seek (read) 13 ms 13 ms 13 ms
Track to track seek 3 ms 4 ms 3 ms
Full Track 25 ms 23 ms (read)
24 ms (write)
25 ms
Average latency 7.14 ms 7.5 ms 7.14 ms
Rotational speed 4200 +/- 0.1% rpm 4200 rpm 4,200 +/- 0.1% rpm
Media Transfer rate 24.7 (inner), 44.9
(outer) Mbits/sec
40 (inner), 61 (outer)
Mbits/sec
38.6 - 69.8 Mbits/sec
Buffer to host 16.6 Mbytes/sec 16.6 Mbytes/sec 16.6 Mbytes/sec
Buffer size 128 KB 96 KB 128 KB
Spindle start time 5 sec 2.3 sec 5 sec
Reliability:
MTBF: Power-on
Hours
300,000 hours 300,000 hours 300,000 hours
Unrecoverable errors 1.0E-13 bits transfer 1.0E-13 bits transfer 1.0E-13 bits transfer
Configuration:
Sector Size 512 Bytes 512 Bytes 512 Bytes
User Cylinders 2,920 2,800 5,160
Data Heads 6 4 6
Disks 3 2 3
Floppy Disk Drive
The floppy disk drive connects to a dedicated port, leaving the parallel port free. It is hot-
swappable and configurable as drive A.
Floppy disk drive manufacturers are subject to change without notice.