VAX collectors attention - test-drb@ccmp.vtda.org

2 Dec 1998

At 12:20 PM 01-12-98 +1030, Geoff Roberts wrote:

...
 Hierarchical Storage Controller.
Waist high filing cabinet sized box, HEAVY too.
Basically, it's a PDP8 I think, running a little o/s called CRONIC
(Colorado Rudimentary Operating Nucleus for Intelligent Controllers) 
PDP-11

...
 Pretty much obsolete now.  There was a slightly more
sophisticated version
called a HSC70
that used RX floppys instead of the tapes, and could handle more drives,
etc. 
The -70 had many advantages, speed of booting being the most interesting.
Increased data access speeds when booted was also and advantage :-)

There were HSC-90s as well, which had a SCSI option card to allow you to
attach expensive SCSI disks to an expensive HSC to an expensive VAX (or
alpha)....

...
 I think there were a couple of models after that too. 
I've seen a HSC70 at
a scrap dealer recently. 
Excuse me, I've still got one in production and a couple of spares in my
"spares" room....

...
 Allison or one of the other Master Decologists will
doubtless correct any
mistakes in the above. :^) 
Well I'm not Allison :-)

 Huw Davies                      | e-mail: Huw.Davies(a)latrobe.edu.au
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