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Specifications 6-9
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: The Integrity Group Saved by: The Integrity Group Saved date: 10/26/00 11:53 AM
Part Number: 128679-006 File name: Ch06
Table 6-12
Continued
1.68 MB
DMF
1.44 MB 1.2 MB 1.2 MB 720 KB
Magnetic tracks
surface
80 80 77 80 80
Optical servo
tracks/surface
N/A N/A N/A N/A N/A
Sectors/track 21 18 8 15 9
Sector interleave 2:1 1:1 1:1 1:1 1:1
Spare sectors 00000
Zones (each side) 11111
Average
random seek
70 ms 70 ms 70 ms 70 ms 70 ms
Track-to-track
seek
25 ms 25 ms 25 ms 25 ms 25 ms
Max single seek 170 ms 170 ms 170 ms 170 ms 170 ms
Average latency 41.67 ms 41.67 ms 41.67 ms 41.67 ms 41.67 ms
Motor RPM 720±
0.5%
720±
0.5%
720±
0.5%
720±
0.5%
720±
0.5%
Motor start time 800 ms 800 ms 800 ms 800 ms 800 ms
Track density 135 TPI 135 TPI 135 TPI 135 TPI 135 TPI
Track width 125 µm 125 µm 125 µm 125 µm 125 µm
Encoding method MFM MFM MFM MFM MFM
Max flux density 17,334
FCI
17,334
FCI
17,334
FCI
17,334
FCI
17,334
FCI
Recording density 17,334
BPI
17,334
BPI
17,334
BPI
17,334
BPI
17,334
BPI
Nominal transfer
rate
150
KB/sec
150
KB/sec
125
KB/sec
125
KB/sec
75
KB/sec
Nominal sustained
transfer rate
across interface
65
KB/sec
read
32
KB/sec
write
55
KB/sec
read
28
KB/sec
write
49
KB/sec
read
25
KB/sec
write
46
KB/sec
read
23
KB/sec
write
28
KB/sec
read
14
KB/sec
write
Buffer transfer rate 4.0
MB/sec
4.0
MB/sec
4.0
MB/sec
4.0
MB/sec
4.0
MB/sec