Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D
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7
4.2
Unformatted and formatted capacities
Formatted capacity depends on the number of spare reallocation sectors reserved and the number of bytes
per sector. The following table shows some typical formatted capacities.
Capacities in Megabytes
Applicable model numbers
Spare Sector or Cylinders
ST11200
ST1980
ST1950
ST1830
reserved for reallocation
512*
1024*
512*
1024*
512*
1024* 512*
1024*
No Spares
1066
1116
872
913
814
852
712
747
One Spare Sector
per track/2 spare
cylinders per unit**
1051
1087
860
889
803
831
702
728
One Spare Sector
per cylinder; 2 spare
cylinder per unit**
1064
1114
870
910
812
850
711
745
Unformatted Capacity
1248
1021
953
834
*Bytes per sector. Sector size selectable at format time. Users having the necessary equipment may
modify the data block size before issuing a format command and obtain different formatted capacities than
those listed. User available capacity depends on spare reallocation scheme selected. See Mode Select
Command and Format Command in the SCSI Interface Product Manual P/N 77738479.
**Spare cylinders are on the inner tracks.
The standard OEM model is as follows:
Formatted Data Block Size
Unformatted
512 Byte/Sector
ST11200N/ND/NC
1054 MB*
1248 MB
ST1980N/ND
860 MB**
1021 MB
ST1950N
803 MB**
953 MB
ST1830N
702 MB**
834 MB
*
Twelve spare sectors per cylinder, two spare cylinders/unit.
**
One spare sector per track, two spare cylinders/unit.
4.3
Options (factory installed)
The capacities shown in paragraph 4.2 are available upon request. Other capacities can be ordered de-
pending on sparing scheme and sector size requested.
The following options are incorporated at the time of production. See Section 12.0.
•
Front panel (green LED) - See Figure 3.0-1
•
Installation Manual P/N 77738480
•
SCSI Interface Terminating Resistors (Single Ended only)
4.4
Optional accessories (user installed)
The following accessories are available. All kits may be installed in the field. See Section 13.0.
•
Front Panel Kit (with green LED) - See Figure 3.0-1
•
Single Unit shipping pack kit
•
Installation Guide P/N 77738480
•·
Adapter Accessory Frame Kit P/N 75790701 (adapts 3.5-inch drive to fit in 5.25-inch drive mounting
space)
