RP06 disk drive
From Computer History Wiki
| RP06 | |
| Manufacturer: | Memorex (basic drive), Digital Equipment Corporation (electronics) |
|---|---|
| Drive Controller(s): | RH11 (UNIBUS) |
| Capacity: | 176 Mbytes |
| Transfer Rate: | 806 KB/s (peak) |
| Average Access Time: | 38.3 msec |
| Revolutions per Minute: | 3600 |
| 1/2 Revolution Time: | 8.3 msec |
| One Track Seek Time: | 10 msec |
| Average Seek Time: | 30 msec |
| Total Surfaces: | 20 (19 data, 1 servo) |
| Tracks per Surface: | 815 |
| Sectors per Track: | 22 |
| Words per Sector: | 256 |
| Tracks per Inch: | 384 |
| Density: | 4040 bpi (maximum) |
| Recording Method: | Modified Frequency Modulation (MFM) |
| Physical Size: | 33" W x 47" H x 32" L |
| Weight: | 600 pounds |
| Power Consumption: | 660 VA per phase (running); 3300 VA per phase (starting, 10 seconds max) |
The RP06 was the successor to the RP04 multi-platter large disk drives. The actual drive was a Memorex 677-01, OEM'd by DEC, who added interface electonics.
As a MASSBUS device, it did not have a specific device controller, but used the appropriate MASSBUS controller. A maximum of 8 drives were supported per controller; drives could be dual-ported, to allow access from two different controllers.
The block headers are protected by a CRC, and the data by an ECC.
