Disk size limits in VMS 5.4-1?

From: Chuck McManis <cmcmanis_at_mcmanis.com>
Date: Sat Feb 5 22:43:29 2000

At 10:41 PM 2/5/00 -0500, Allison wrote:
>It's not so much a limit on 5.4 as the specific hardware limits that were
>usually lower than VMS maxima. FOr example 3100s(early) cant have a boot
>device more than 1.07gb but data devices can be much larger. The problem
>was a artifact of early SCSI implmentations and not VMS limits. Since VMS
>allowed (even before V5) things like bound and shadow volumes to create
>terabyte sized disk fields I can see a limit for practical systems.

Hmmm, good information but the problem remains without a clear solution. I
was going to look at this today but instead got wrapped up in another vax
project, a 3400 that I thought was in a dead BA213 roll around box. After
replacing the power supplies in that box I discovered that a single RF30
isn't enough to cause the BA213's PSU to start regulating.

But that raised another interesting point since the VAX 4000 manual has a
nice discussion about clustering a couple of VAX on the DSSI bus and the
3400 has an on board DSSI bus, perhaps I can cluster the 3400 and the 4000
together. I still have to figure out if 5.4 can cluster dissimilar CPUs.

--Chuck
Received on Sat Feb 05 2000 - 22:43:29 GMT