4 May
2008
4 May
'08
4:26 p.m.
On Sunday 04 May 2008, Antonio Carlini wrote:
But if you deskin a BA440, the holes in the flanges
are clearly
there to allow rackmounting - what else could they be for?
It looks like on the BA441 you need to slide out the chassis to
get at the Q-Bus devices and the console connections. The cable
wiring looks to be "fun". Do you _really_ need one of those?
Back-to-back BA440s works (or worked for me) and gives you the
same VUP-density in a rack.
The BA4[34]0/BA213 out of the skins is intended to be mounted in a
short-depth or telcom rack (eg, a DECserver 500 or CMR53). The
BA441/431 version is designed to be mounted in a deep (normal) rack.
Also, mounting BA213-style chassis back-to-back screws up the normal
front-to-back cooling that you want in a rack.
Also, I haven't measured mine, but I'm pretty sure that the deep rack
versions (6U maybe?) are less than half the height of the "vertical"
versions. They're pretty much a BA213 set on its back, and with the
drives coming out of where the top of the BA213 chassis used to be.
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org