On 2015-10-29 20:35, tony duell wrote:
When you had machines with an RL-drive "internal", you normally did not
use a cab kit. That was for external drives. The same is true for all
other DEC drives I know as well. I've certainly seen direct cabling
internally for SDI drives as well as external cabling for RX50 and TK50.
The RL01 version of the MINC doesn;t use the cab kit. It uses that Berg-RL
cable from the RLV11 in the MINC chassis to the first RL01, then the normal
RL-RL cable between the drives. I am not sure if that's an 'internal drive', the
2 RL01s are fitted into a small rack cabinet, the MINC chassis fits on top held
down by 2 captive screws, it doesn't mount on slide rails or anything like that.
Conversely the VAX11/730 has an RL02 controller as part of the IDC (Integrated
Disk Controller, it talks directly to internal CPU buses rather than sitting on
the
Unibus). Here, there is a Berg-Berg cable from the IDC to a connector on the
CPU distribution panel (which also carries the console terminal connector, etc)
and
then RL-RL cables from that to the first RL02 and between RL02s. Again, I don't
know if you call that an internal drive, the CPU is a separate rackmouting box,
the drive is another rackmounitng unit, but it was common to have 'packaged'
configurations of this machine, some of which included RL02s.
I used "internal" in a somewhat loose sense. I think of it as internal
if it was intended to be in the same cabinet. Thus, a short distance
between the CPU and the drive, and the cabling do not go outside that
cabinet.
Now, you could have a cab kit even under those circumstances. I think
mostly of "internal" as when the whole package was delivered that way
from DEC.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: b...@softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
