Difference between revisions of "RP02 disk drive"

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{{Infobox Disk drive  
 
{{Infobox Disk drive  
 
| name = RP02
 
| name = RP02
 +
| image = RP02.jpg
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| imgwidth = 200px
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| 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]])
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| 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
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The '''RP02''' was the predecessor to the later [[RP03 disk drive|RP03]] multi-[[platter]] large [[disk]] drive.
 
The '''RP02''' was the predecessor to the later [[RP03 disk drive|RP03]] multi-[[platter]] large [[disk]] drive.
  
The actual drive was produced by Memorex - a model 660-2 - and [[Original Equipment Manufacturer|OEM]]'d by [[Digital Equipment Corporation|DEC]], who added interface [[electonic]]s.
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The actual drive was produced by [[Memorex]] - a model 660-2<sup>a</sup> - and [[Original Equipment Manufacturer|OEM]]'d by [[Digital Equipment Corporation|DEC]], who added interface [[electronic]]s.
  
 
A maximum of 8 drives were supported per controller.
 
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.
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==See also==
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* [[:File:MemorexRP02.jpg|Memorex 660 drive used for RP02]]
  
 
{{semi-stub}}
 
{{semi-stub}}
  
[[Category: DEC Disk Drives]]
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==External links==
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* [http://www.bitsavers.org/pdf/dec/disc/rp02_rp03/RP02__MRX_660-1_Schematic.pdf Peripheral Systems Corporation 660-1 schematics]
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* [http://www.bitsavers.org/pdf/memorex/disc/660/ 660] - Memorex 660 documentation at [[Bitsavers]]
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* [https://americanhistory.si.edu/collections/nmah_1064820 Memorex Model 660-1]
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* [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)]
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* [https://www.computerhistory.org/storageengine/memorex-introduces-an-ibm-compatible-hdd/ Memorex Introduces an IBM Compatible HDD]
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** [http://s3.computerhistory.org/groups/memorex-630.pdf Memorex 630]
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[[Category: DEC Early Disk Drives]]
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[[Category: DEC Removable-pack Disks]]

Latest revision as of 19:41, 10 February 2024


RP02
RP02.jpg
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.

See also

External links