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
1.44-billion-byte
2.1-billion-byte

 

Hard Drive

Hard Drive

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

PRML (Partial

 

 

Maximum Likelihood)

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)

25 ms

 

 

24 ms (write)

 

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

40 (inner), 61 (outer)

38.6 - 69.8 Mbits/sec

 

(outer) Mbits/sec

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

300,000 hours

300,000 hours

300,000 hours

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.

78