Unity 4.0.5 to 4.2.1 (Exchange message store off box) Upgrade- Caveats?

[mdury]

Unity 4.0.5 to 4.2.1 (Exchange message store off box) I have located the Upgrade info , I was just wondering if anyone has performed this upgrade, and ran ino any issues.

Thanks

[Tommer Catlin]

I've done a couple and they seem to go pretty smooth.

Couple things:

- Pull a drive before you start. (quick restore if something goes wrong)

- If you have failover installed, I would uninstall failover and then reinstall after the upgrade is complete. I have had issues with this during the upgrade

- Upgrade your TSPs 8.3

- Follow the steps, dont skip anything

- upgrade will take a bit of time depending on the size the current SQL database. Expect around 2 hours. SQL database is upgraded during the process

Good luck!