RP02 disk drive: Difference between revisions
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Confusion over exact model no |
argh, redo caption, found an actual RP02 image |
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{{Infobox Disk drive | {{Infobox Disk drive | ||
| name = RP02 | | name = RP02 | ||
| image = RP02.jpg | |||
| imgwidth = 200px | |||
| caption = RP02 drive | |||
| manufacturer = Memorex (basic drive), [[Digital Equipment Corporation]] (electronics) | | manufacturer = Memorex (basic drive), [[Digital Equipment Corporation]] (electronics) | ||
| controller = [[RP10 disk controller|RP10]] ([[PDP-10]]) | | controller = [[RP10 disk controller|RP10]] ([[PDP-10]])<br>[[RP11 disk controller|RP11]] ([[UNIBUS]]) | ||
| capacity = 23.3 Mbytes (formatted), 29 Mbytes (raw) | | capacity = 23.3 Mbytes (formatted), 29 Mbytes (raw) | ||
| transfer rate = 7.4 usec/18-bit word | | transfer rate = 7.4 usec/18-bit word | ||
| Line 32: | Line 35: | ||
a - There is some disagreement among sources; some claim it was a 660-1. There was apparently also a 660-0, which was a different version, rented out by Memorex; many were converted to 660-1's and sold to DEC. | a - There is some disagreement among sources; some claim it was a 660-1. There was apparently also a 660-0, which was a different version, rented out by Memorex; many were converted to 660-1's and sold to DEC. | ||
==See also== | |||
* [[:File:MemorexRP02.jpg|Memorex 660 drive used for RP02]] | |||
{{semi-stub}} | {{semi-stub}} | ||
[[Category: DEC Disk Drives]] | ==External links== | ||
* [http://www.bitsavers.org/pdf/dec/disc/rp02_rp03/RP02__MRX_660-1_Schematic.pdf Peripheral Systems Corporation 660-1 schematics] | |||
* [http://www.bitsavers.org/pdf/memorex/disc/660/ 660] - Memorex 660 documentation at [[Bitsavers]] | |||
* [https://americanhistory.si.edu/collections/nmah_1064820 Memorex Model 660-1] | |||
* [https://web.archive.org/web/20160321041117/http://chmss.wikifoundry.com/page/Memorex+660-1+Disk+Drive+(OEM+2314) Memorex 660-1 Disk Drive (OEM 2314)] | |||
* [https://www.computerhistory.org/storageengine/memorex-introduces-an-ibm-compatible-hdd/ Memorex Introduces an IBM Compatible HDD] | |||
** [http://s3.computerhistory.org/groups/memorex-630.pdf Memorex 630] | |||
[[Category: DEC Early Disk Drives]] | |||
[[Category: DEC Removable-pack Disks]] | |||
Latest revision as of 18:41, 10 February 2024
| RP02 | |
 RP02 drive | |
| Manufacturer: | Memorex (basic drive), Digital Equipment Corporation (electronics) |
|---|---|
| Drive Controller(s): | RP10 (PDP-10) RP11 (UNIBUS) |
| Capacity: | 23.3 Mbytes (formatted), 29 Mbytes (raw) |
| Transfer Rate: | 7.4 usec/18-bit word |
| Average Access Time: | 62.5 msec |
| Revolutions per Minute: | 2400 |
| 1/2 Revolution Time: | 12.5 msec |
| One Track Seek Time: | 20 msec |
| Average Seek Time: | 50 msec |
| Maximum Seek Time: | 80 msec |
| Total Surfaces: | 20 (11 platters) |
| Tracks per Surface: | 203 (nominally 200 plus 3 spares) |
| Sectors per Track: | 10 |
| Words per Sector: | 256 18-bit |
| Density: | 2230 bpi (maximum) |
| Recording Method: | double frequency, NRZ |
| Physical Size: | 30" W x 39" H x 24" L |
| Weight: | 295 pounds |
| Power Consumption: | 1250 VA (running); 5200 VA (starting) |
The RP02 was the predecessor to the later RP03 multi-platter large disk drive.
The actual drive was produced by Memorex - a model 660-2a - and OEM'd by DEC, who added interface electronics.
A maximum of 8 drives were supported per controller.
Notes
a - There is some disagreement among sources; some claim it was a 660-1. There was apparently also a 660-0, which was a different version, rented out by Memorex; many were converted to 660-1's and sold to DEC.
