Upgrading VMS on a system where hardware is newer than the system disk OS supports

From: Rich Jordan (jordan_at_ccs4vms.com)
Date: 02/26/04 

Date: 26 Feb 2004 14:07:13 -0800

Here's a new one for us. I've never had this come up, and I can't do
a test run due to lack of hardware. We have a customer with a DS10
running V7.2-1. They're going to upgrade to a DS15, which has a
minimum VMS requirement of V7.3-1 (plus TIMA). There is a miniscule
downtime window.

Since doing a V7.2-1 upgrade to V7.3-1 or newer on the DS10 is not
feasible due to time, I'm wondering if the following is supported.

Image backup the DS10 disks to tape, then restore on the DS15 disks
using the CD boot environment. We won't try to boot the DS15 on the
V7.2-1 system disk.

Boot the DS15 with the V7.3-1 (or -2) CD and upgrade the V7.2-1 system
disk. Bring up a happy DS15 with supported OS.

In other words are there any issues upgrading a VMS system disk from a
version not supported on the hardware being used for the upgrade,
since we are obviously using a supported version to boot and actually
perform the upgrade?

Seems like there should be no problem, but if anyone knows I'd
appreciate hearing about it.

Rich Jordan
CCS

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