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From: lzm@mace.cc.purdue.edu (Chris McCoy)
Newsgroups: comp.sys.ibm.pc.rt
Subject: SCSI on RISC/6000 model 320
Keywords: SCSI
Message-ID: <5504@mace.cc.purdue.edu>
Date: 12 Sep 90 13:25:59 GMT
Organization: Purdue University
Lines: 26

We are currently installing our new RISC/6000 model 320 which is
configured with the 320 MB hard disk select, one 150 MB tape backup unit,
one CD-ROM, and 32 MB main memory.  We also have ETHERNET, Async ports,
and the grpahics adapter, thus, we have no more MCA ports available for
expansion.

While installing this beast, I noticed the service manual indicated
that the SCSI channel can support EITHER 4 devices (2 internal, 2 external)
or 7 devices (all external).  Well, the 320 MB disk is on the internal SCSI
and the CD-ROM and TBU are on the external SCSI.  According to the
installation manual and confirmed by our SE, we cannot add another
external SCSI device to this adapter.  Our only option is to add another
internal 320 MB drive to the internal (of course there are options for
swapping what's where, but ...).

Does anyone know the scoop on the SCSI adapter?  We will need to add
another hard disk and would rather purchase a third party drive because
of the cost savings.  As it stands now, our options are extremely
limited.
--

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Chris McCoy                         : INTERNET:   mccoy@ecn.purdue.edu
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