Difference between revisions of "RK06/07 disk drive"
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{{Infobox Disk drive | {{Infobox Disk drive | ||
| − | | name = RK07 | + | | name = RK06/RK07 |
| manufacturer = [[Digital Equipment Corporation]] | | manufacturer = [[Digital Equipment Corporation]] | ||
| − | | | + | | year introduced = 1976 |
| − | | controller = [[RK611]] ([[UNIBUS]]) | + | | controller = [[RK611 disk controller|RK611]] ([[UNIBUS]]) |
| + | | capacity = 13.8 MB (RK06)<br>27.6 MB (RK07) | ||
| + | | transfer rate = 4.3 M/sec (un-buffered) <!-- 538 KB/s --> | ||
| + | | average access time = 49 msec | ||
| + | | rpm = 2400 | ||
| + | | revolution time = 12.5 msec | ||
| + | | one track seek = 8 msec (RK06)<br>6.5 msec (RK07) | ||
| + | | average seek = 38 msec (RK06)<br>36.5 msec (RK07) | ||
| + | | maximum seek = 75 msec (RK06)<br>71 msec (RK07) | ||
| + | | surfaces = 4 (3 data, 1 servo) | ||
| + | | tracks = 411 (RK06)<br>815 (RK07)<!-- (nominally 400 plus 6 spares; many systems used all 406, as reliability was high) --> | ||
| + | | sectors = 20 (18-bit words)<br>22 (16-bit words) | ||
| + | | words per sector = 256 | ||
| + | | tracks per inch = 192.3 (RK06)<br>384.6 (RK07) | ||
| + | | density = 4040 bpi (maximum) | ||
| + | | recording method = [[Modified Frequency Modulation|MFM]] | ||
| + | <!-- Physical size = 21-5/8?" W x 39" H x 33" L --> | ||
| + | | weight = 325 pounds | ||
| + | <!-- | power consumption = 660 VA per phase (running); 3300 VA per phase(starting) --> | ||
| media = dual platter removable disk cartridge | | media = dual platter removable disk cartridge | ||
}} | }} | ||
| − | + | [[Image:rk07drive.jpg|200px|thumb|left|RK07 drive]] | |
| − | + | The '''RK06''' and '''RK07''' were dual-[[platter]] removable cartridge [[disk]] [[drive]]s manufactured by [[Digital Equipment Corporation|DEC]]. The [[UNIBUS]] [[device controller]] was the [[RK611 disk controller|RK611]]; a maximum of 8 drives were supported per controller. | |
| − | + | Both supported both 15-bit and 18-bit [[word]]s; user data is protected by a 32-bit [[error-correcting code|ECC]] per [[sector]]. RK06/07 drives could be dual ported. They both used 2-[[platter]] packs (RK06K and RK07K respectively); of the 4 surfaces, one was read-only, pre-recorded by the manufacturer with servo information | |
| − | [[Category: DEC Disk Drives]] | + | ==Cabling== |
| + | |||
| + | [[Image:rk07.jpg|200px|thumb|left|2 RK07 packs]] | ||
| + | |||
| + | The RK06/7 uses a round cable with latching connectors at each end to go between drives; the part number of the original cable is 70-12192-xx (where xx is the length, one of -08, 12, 25, or 40). | ||
| + | |||
| + | To get from the controller to the first drive of the string, a BC06R-06 [[flat cable]] goes from the controller to a transition adapter (part number 70-12415-0-0) in a mounting bracket attached to the rack; a standard cable goes from there to the first drive. | ||
| + | |||
| + | The drive string must be ended with a [[terminator]] on the 'out' port of the last drive, part number 70-12293-0-0 (although the terminators generally have no markings on them). Terminators in both plain black plastic, and with silvery metallic coating, have been observed. | ||
| + | |||
| + | The terminators and transition adapters for the [[RL01/02 disk drive]]s and RK06/07 drives are the same, and interchangeable. The cables are semi-compatible; RK06/7 cables may be used with the RL0x, but not the other way around - those for the RK06/07 have additional wires which are not present in the RL01/02 cables. | ||
| + | |||
| + | ==External links== | ||
| + | |||
| + | * [http://bitsavers.org/pdf/dec/disc/rk06_rk07/ rk06-rk07] - documentation at [[Bitsavers]] | ||
| + | ** [http://www.bitsavers.org/pdf/dec/disc/rk06_rk07/EK-RK067-UG-001.pdf RK06/RK07 Disk Drive User's Manual] (EK-RK067-UG-001) | ||
| + | ** [http://bitsavers.org/pdf/dec/disc/rk06_rk07/EK-RK067-SV-001_RK06_7Maint.pdf RK06/RK07 Disk Drive Service Manual] (EK-RK067-SV-001) | ||
| + | |||
| + | [[Category: DEC Early Disk Drives]] | ||
| + | [[Category: DEC Removable-pack Disks]] | ||
Latest revision as of 23:27, 14 August 2023
| RK06/RK07 | |
| Manufacturer: | Digital Equipment Corporation |
|---|---|
| Year Introduced: | 1976 |
| Drive Controller(s): | RK611 (UNIBUS) |
| Capacity: | 13.8 MB (RK06) 27.6 MB (RK07) |
| Transfer Rate: | 4.3 M/sec (un-buffered) |
| Average Access Time: | 49 msec |
| Revolutions per Minute: | 2400 |
| 1/2 Revolution Time: | 12.5 msec |
| One Track Seek Time: | 8 msec (RK06) 6.5 msec (RK07) |
| Average Seek Time: | 38 msec (RK06) 36.5 msec (RK07) |
| Maximum Seek Time: | 75 msec (RK06) 71 msec (RK07) |
| Media: | dual platter removable disk cartridge |
| Total Surfaces: | 4 (3 data, 1 servo) |
| Tracks per Surface: | 411 (RK06) 815 (RK07) |
| Sectors per Track: | 20 (18-bit words) 22 (16-bit words) |
| Words per Sector: | 256 |
| Tracks per Inch: | 192.3 (RK06) 384.6 (RK07) |
| Density: | 4040 bpi (maximum) |
| Recording Method: | MFM |
| Weight: | 325 pounds |
The RK06 and RK07 were dual-platter removable cartridge disk drives manufactured by DEC. The UNIBUS device controller was the RK611; a maximum of 8 drives were supported per controller.
Both supported both 15-bit and 18-bit words; user data is protected by a 32-bit ECC per sector. RK06/07 drives could be dual ported. They both used 2-platter packs (RK06K and RK07K respectively); of the 4 surfaces, one was read-only, pre-recorded by the manufacturer with servo information
Cabling
The RK06/7 uses a round cable with latching connectors at each end to go between drives; the part number of the original cable is 70-12192-xx (where xx is the length, one of -08, 12, 25, or 40).
To get from the controller to the first drive of the string, a BC06R-06 flat cable goes from the controller to a transition adapter (part number 70-12415-0-0) in a mounting bracket attached to the rack; a standard cable goes from there to the first drive.
The drive string must be ended with a terminator on the 'out' port of the last drive, part number 70-12293-0-0 (although the terminators generally have no markings on them). Terminators in both plain black plastic, and with silvery metallic coating, have been observed.
The terminators and transition adapters for the RL01/02 disk drives and RK06/07 drives are the same, and interchangeable. The cables are semi-compatible; RK06/7 cables may be used with the RL0x, but not the other way around - those for the RK06/07 have additional wires which are not present in the RL01/02 cables.
External links
- rk06-rk07 - documentation at Bitsavers
- RK06/RK07 Disk Drive User's Manual (EK-RK067-UG-001)
- RK06/RK07 Disk Drive Service Manual (EK-RK067-SV-001)
