Difference between revisions of "RK06/07 disk drive"

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| name = RK06/RK07
 
| name = RK06/RK07
 
| manufacturer = [[Digital Equipment Corporation]]
 
| manufacturer = [[Digital Equipment Corporation]]
| year introduced = 1976 (RK06)<br>1976 (RK07)
+
| year introduced = 1976
| capacity = 14 MB (RK06)<br>28 MB (RK07)
 
 
| controller = [[RK611 disk 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:rk07.jpg|200px|thumb|right|2 RK07 packs]]
+
[[Image:rk07drive.jpg|200px|thumb|left|RK07 drive]]
[[Image:rk07drive.jpg|200px|thumb|right|RK07 drive]]
 
  
The RK07 is a dual platter removable disk cartridge drive manufactured by [[DEC|Digital Equipment Corporation]].
+
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.
  
One of the special features of the unit was that it could be dual ported.
+
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
  
The UNIBUS controller was the [[RK611 disk controller|RK611]].
+
==Cabling==
  
The RK07's specifications were 538 KB/s transfer, 49 ms average access time, 6.5 ms track-to-track seek time, 2400 RPM.
+
[[Image:rk07.jpg|200px|thumb|left|2 RK07 packs]]
 
 
==Cabling==
 
  
The RK06/7 uses a 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).
+
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.  
 
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.  

Latest revision as of 00:41, 5 November 2020



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


RK07 drive

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

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 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.