3100 SCSI and 1.07GB (was RE: VAXstation 3100 history) - test-drb@ccmp.vtda.org

1 Dec 1999

--- "Zane H. Healy" &lt;healyzh(a)aracnet.com&gt; wrote:
...
  >I caught from a FAQ is that SCSI MicroVAXen
don't like disks over 1.07Gb -
 >too many blocks to keep track of with a 21-bit pointer.   
...
  Actually, that's not quite right.  Plus I think
the 3100/90 is likely to be
 new enough that this isn't a problem.  Most 3100's can't have a boot disk
 that is over 1.07GB.  The data disks can be over that. 
I wasn't clear.  Sorry.  Yes, the *boot* device can't be over $1FFFFF blocks
long because of the limitation in the SCSI commands used by older firmware.
One reason pointed out in the FAQ is that the system dump *could* overwrite
the first couple of tracks if the disk is over 1.07Gb and conditions are
right.

As has been pointed out, VAXstation 3100s are not upgradable; later MicroVAXen
are either upgradable or no upgrade is necessary.

-ethan

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