Ref: 13420002
Title: General Considerations for Software Subscription Upgrades
date: 7/18/89

Copyright 3Com Corporation, 1991.  All rights reserved.

When performing a 3+ system software upgrade from a previous
release to a current release, the following recommendations will
make your upgrade easier and will help you to recover from a
failed upgrade attempt.

Before starting an upgrade, back up your current software.  If
something goes wrong with the upgrade, you will have a backup to
restore the server to its original state prior to upgrading.
Make sure that you verify the information on the tape as valid
information; verify also that the tape is can be restored to the
server.  The most fail-safe method is to perform a backup and
restore before proceeding with the upgrade process.

Make sure that you have the appropriate version of 3+ system
software to be upgraded.  Many upgrade attempts have failed
because a 3Server (not PC server) was upgraded from a version
that was not the last current release but an earlier release,
such as 1.2.1 to 1.3.1 instead of 1.2.2 to 1.3.1.

After verifying your backup tape and your upgrade software,
proceed with the upgrade.  Pay close attention to the supplied
documentation.  Misinterpretation of the steps may cause a
failure even though it may appear that the procedure was
successful.

If possible, the best way to perform an upgrade is to reformat
and reinstall with the new system software.  This will guarantee
that no old software will reside on the partition from which 3+
is started.  The C: partition should be dedicated to system
software, with some spare room for spooling if the server has
printers attached to it.  If the server is mainly a print server
with several printers attached to it and many users printing at
once, then the C: partition should have more room for spooling.
The C: partition should be partitioned so that it has about 15 to
20 MB of free space (system software should take up about 11 MB).
