I have SBS2011/Exchange Server 2010 and Outlook 2013.
I have been enabling Cache mode whenever I set up Outlook on user computers for safety just in case Exchange Server (20 mailbox database > 200GB in size) crashes or not available for extended period of time.
The downside of that is, from time to time, local copy email@example.com.OST file gets corrupted as some user mailbox size exceeds 20GB. (I know max size for OST is 50GB) Sometimes it takes a long time to open Outlook (maybe because Outlook has to sync its local contents against Exchange Server before opening Outlook?).
Whenever the problem occurs, I simply delete existing OST file and re-open Outlook so that new OST is created. The inconvenience is that users complain that they can't perform search until indexing to complete.
When you perform a search in Outlook, does it make a difference whether Outlook is running in Cache mode or not?
I just like to get know how other experts are managing Outlook data.