Disk Subsystem Categories
There are four categories of disk subsystems: the CS/80 (commandset 80 and subset 80) disks with and without Cartridge Tape Drive (CTD), Multiple Access Controller (MAC) disks, the compact disk subsystems, and the SCSI disks. The model numbers associated with each type of drive are:
CS/80: | 7908P/R | - | 16Mbyte | (fixed disk) |
| 7941A | - | 24Mbyte | (fixed disk without CTD) |
| 7942A | - | 24Mbyte | (fixed disk with CTD) |
| 7911P/R | - | 28Mbyte | (fixed disk) |
| 7907A | - 20/20Mbyte | (one fixed, one removable disk) | |
| 7945A | - | 55Mbyte | (fixed disk without CTD) |
| 7946A | - | 55Mbyte | (fixed disk with CTD) |
| 7912P/R | - | 65Mbyte | (fixed disk) |
| 7957A/B | - | 81Mbyte | (fixed disk) |
| 7958A | - | 130Mbyte | (fixed disk) |
| 7914P/R | - | 132Mbyte | (fixed disk with/without CTD) |
| 7914CT | - | 132Mbyte | (fixed disk with CTD) |
| 7914ST | - | 132Mbyte | (fixed disk with 7974A tape unit) |
| 7958B | - | 152Mbyte | (fixed disk) |
| 7962B | - | 152Mbyte | (expandable fixed disk) |
| 9262B | - | 152Mbyte | (removable disk) |
| 7959B | - | 304Mbyte | (fixed disk) |
| 7963B | - | 304Mbyte | (expandable fixed disk) |
| 9263B | - | 304Mbyte | (removable disk) |
| 7936A | - | 307Mbyte | (fixed disk) |
| C2200 | - | 335Mbyte | (fixed disk) |
| 7933A | - | 404Mbyte | (fixed disk) |
| 7935A | - | 404Mbyte | (removable disk) |
| 7937A | - | 571Mbyte | (fixed disk) |
| C2202 | - | 670Mbyte | (fixed disk with cache) |
| C2203 | - | 670Mbyte | (fixed disk) |
MAC: | 7906M/S | - | 20Mbyte | (1 fixed, 1 removable disk) |
| 7920M/S | - | 50Mbyte | (removable disk) |
| 7925M/S | - | 120Mbyte | (removable disk) |
Compact: | 243x/8x* | - | 10Mbyte | (integral fixed) |
|
| - | 14.5Mbyte | (integral fixed) |
|
| - | 20Mbyte | (integral fixed) |
| 12122A | - | 20Mbyte | (fixed) |
|
| - | 270Kbyte | (floppy) |
|
| - | 630Kbyte | (floppy) |
| 9121S | - | 270Kbyte | (floppy) |
| 9121D | - 2x270Kbyte | (floppy) | |
| 9122C | - | 2x2Mbyte | (dualsided floppy) |
| 9122D | - 2x630Kbyte | (dualsided floppy) | |
| 9133XV | - | 15Mbyte | (fixed) |
|
| - | 270Kbyte | (floppy) |
| 9133D | - | 15Mbyte | (fixed) |
-630Kbyte (floppy)
* Micro/1000 integrated disk using HP 12022A controller.
C2 Configuring a Disk Subsystem