Trying to get my RLV11 working

Johnny Billquist bqt at
Thu Oct 29 15:41:36 CDT 2015

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 

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 Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol

More information about the cctalk mailing list