Difference between revisions of "RP03 disk drive"
From Computer History Wiki
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* [[RP01 disk drive]] | * [[RP01 disk drive]] | ||
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==External links== | ==External links== | ||
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* [http://www.bitsavers.org/pdf/dec/disc/rp02_rp03/RP03_ISS_715_Schematic.pdf Information Storage Systems schematics] | * [http://www.bitsavers.org/pdf/dec/disc/rp02_rp03/RP03_ISS_715_Schematic.pdf Information Storage Systems schematics] | ||
| − | + | [[Category: DEC Early Disk Drives]] | |
| − | + | [[Category: DEC Removable-pack Disks]] | |
| − | [[Category: DEC Disk Drives]] | ||
Revision as of 23:35, 14 August 2023
| RP03 | |
| Manufacturer: | Sperry Univac ISS (basic drive), Digital Equipment Corporation (electronics) |
|---|---|
| Drive Controller(s): | RP10 (PDP-10) RP11 (UNIBUS) |
| Capacity: | 41 Mbytes |
| Transfer Rate: | 7.5 μsec/word |
| Average Access Time: | 41.5 msec |
| Revolutions per Minute: | 2400 |
| 1/2 Revolution Time: | 12.5 msec |
| One Track Seek Time: | 7.5 msec |
| Average Seek Time: | 29 msec |
| Maximum Seek Time: | 55 msec |
| Total Surfaces: | 20 |
| Tracks per Surface: | 406 (nominally 400 plus 6 spares; many systems used all 406, as reliability was high) |
| Sectors per Track: | 10 |
| Words per Sector: | 256 |
| Density: | 2200 bpi (maximum) |
| Recording Method: | double frequency, NRZ |
| Physical Size: | 30" W x 40" H x 24" L |
| Weight: | 315 pounds |
| Power Consumption: | 660 VA per phase (running); 3300 VA per phase(starting) |
The RP03 was the successor to the earlier RP02 multi-platter large disk drive, and the predecessor to the later RP04.
The actual drive was produced by the Information Storage Systems (ISS) division of Sperry Univac (a model 715), and OEM'd by DEC, who added interface electronics.
A maximum of 8 drives were supported per device controller.
