Originally Posted by hdawg
Why would their OST have to resync? Are these users using Outlook 2003? When you use move mailbox wizard and stay in the same Exchange org, the OST should be reusable and not require a full sync.
That's what I was thinking too.
Exchange is not the most recovery-friendly software out there.
If I were you, I'd start by using the new hardware to bring up a new server in the same org. Set up your mailbox for offline cache and move it. See if it does a complete re-sync. Worst case scenario, you move your mailbox back and remove the new server from the environment and do what Microsoft tells you.
BTW, if you are doing a full recovery of that size server, you may want to look into a dial-tone recovery. It will minimize down time.