DEC RM05 mountings

From: Paul Koning <pkoning_at_equallogic.com>
Date: Wed Oct 6 08:07:41 2004

>>>>> "Jules" == Jules Richardson <julesrichardsonuk_at_yahoo.co.uk> writes:

 Jules> On Mon, 2004-10-04 at 16:14 +0000, Jules Richardson wrote:
>> On Mon, 2004-10-04 at 09:45 -0600, Mike Cesari wrote: > On Oct 4,
>> 2004, at 8:11 AM, Jules Richardson wrote:
>> >
>> > >
>> > > Does anyone know how an RM05 drive assembly fastens to the
>> massbus > > control cab beneath?

 Jules> Right, I'm confuzzling myself here.

 Jules> So, the upper part of the RM05 just contains the pack and head
 Jules> assembly, whilst the cabinet beneath contains just PSU, blower
 Jules> unit, and interface cables? There's no read/write logic in
 Jules> that lower cabinet (or the drive above) at all?

 Jules> Then there's a seperate cabinet (which we need to find) which
 Jules> actually has the read/write logic for the drives and in turn
 Jules> hooks to the back of the 570?

 Jules> What's confusing me is that there are four connectors (dual
 Jules> port, in/out) inside the cabinet that sits beneath the drive
 Jules> assembly. Those look to be exactly the same as an output
 Jules> connector on the back of the DECsystem. That's what was making
 Jules> me think that the back of the DECSystem plugs straight into
 Jules> one of those connectors on the lower drive cabinets (I assumed
 Jules> the out on one cab then chains to the input on the next one
 Jules> etc.), and that there was no 'missing cabinet' and that all
 Jules> the read/write logic and massbus interface was in the cabinets
 Jules> below each drive. Seems odd they'd use the same connector for
 Jules> two different applications (machine to control cabinet, then
 Jules> control cabinet to each drive)

Sounds like Massbus connectors...

But the docs on bitsavers.org (pdf/dec/disc/RM05) clearly show a
separate "adapter" cabinet. My memory isn't good enough to comment
further.;

 Jules> ps. every Linux pdf viewer I can find takes an age to flip
 Jules> between pages when looking at docs the size of the ones on
 Jules> bitsavers - to the point that it makes casual reading
 Jules> completely impossible :-(

I noticed that too. Get Adobe's Acrobat Reader for Linux. That one
does the job right. Ghostview is pretty decent, too, but acroread is
clearly the best. One issue I fought with for a while: acroread was
confused about wanting a UTF font and not finding it. (Why not? I
have lots of fonts installed...) Anyway, defining "LANG=C" (for
acroread, at least, not necessarily globally) fixes that.

          paul
Received on Wed Oct 06 2004 - 08:07:41 BST