Specifications Summary; Formatted Capacity; Physical Geometry - Seagate ST3285N Product Manual

ST3655 Family SCSI Drives Product Manual, Rev. A

1.0 Specifications summary

1.1 Formatted capacity

The capacities specified here do not include spare sectors and cylinders.
The media contains one spare sector per cylinder and two spare cylin-
ders per drive. You can change this allocation using the Format Device
page (03 ) discussed in Appendix C.3.
H
Formatted capacity (Mbytes*)
Bytes per sector
Total sectors
Formatted capacity (Mbytes*)
Bytes per sector
Total sectors
* One megabyte equals one million bytes.

1.2 Physical geometry

Discs
Servo heads
Read/write heads
Cylinders
Discs
Servo heads
Read/write heads
Cylinders
ST3285N ST3390N
248.62 344.31
512 512
485,601 672,480
ST3550N ST3655N
456.48 545.29
512 512
891,574 1,065,036
ST3285N ST3390N
2 2
1 1
3 3
1,777 2,676
ST3550N ST3655N
3 3
1 1
5 5
2,126 2,493
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