Seagate ST157N - 1.4 Functional Specifications

MLC-0 MLC-1
Track-to-Track:
Average:
Maximum (Full-Stroke):
Average Latency:
8 msec. typ.
1 O msec. max.
38 msec. typ.
40 msec. max.
90 msec. typ.
95 msec. max.
8.33msec.
8msec.
typ.
1 O msec. max.
28 msec. typ.
30 msec. max.
70 msec. typ.
75 msec. max.
8.33msec.
Note: Several factors contribute to overhead time, Including host
and controller overhead. Host overhead varies from one host
to another
and can not be specified. Controller overhead Is a
function of controller hardware and firmware and Is typically
less than 3 msec.
1.4 Functional Specifications
ST125N ST138N ST157N
Tracks:
Cylinders:
Read/Write Heads:
1,628
407 (0-406)
4
2,452
615
(0-614)
4
3,678
615
(0-614)
6
Discs:
Rotational
Speed:
Recording Method:
Recording Density (BPI):
Flux Density (FCI):
Track Density (TPI):
Interface:
1/0 Data Transfer Rate:
Int. Data Transfer Rate:
Nonrecoverable Read Errors:
2 2
3,600±0.5%
RLL (2,7)
22,430
14,953
824
SCSI
Up to 1.5 Mbytes/sec.
Up to 7.5 Mblts/sec.
1 per 10
12
bits read
ST125N/138N/157N Product Manual, Rev. C
3
3