Please advise on software upgrade procedures in general...

Dear Experts,

Could anyone point me to links (or offer direct advice) on best practices for doing fairly complex software upgrades at customer sites?  I'm looking for advice on how to do things in general, rather than specific technical details. Things like "Make backups of everything...Keep old and new versions running in parallel during install...etc."

My product typically takes a couple of days to install, and involves a good deal of software outside of Java.  So it's not just a matter of popping in a CD and letting InstallShield do it...

Thanks,
BrianMc1958
BrianMc1958Asked:
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colr__Connect With a Mentor Commented:
This really depends on a lot of factors. If the software can be stopped, then stop it, back it ALL up, remove it, reinstall the upgrade.

If it cant be stopped, then you'd be best setting up a seperate isolated instance of the new software and gradually migrating clients (are there any clients) over to it) instead of doing them all at the same time.

The exact procedue really depends a lot on what the softweare does, if it can be stopped or not etc. Its hard to give a set of outline w/o knowing more about the software.
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