Assume the following:
A user has Outlook 2010 installed onto their device, and has a single profile configured with a single email account; this account is an address hosted on an Exchange server
The user has "Exchange Cached Mode" enabled, meaning as a result that the Outlook client caches everything within their Exchange mailbox to disk within an OST file stored within their local profile on the machine
Due to storing lots of information within their Exchange mailbox, the size of the user's OST file eventually reaches 50 GB; the default maximum size for OSTs/PSTs in Outlook 2010
In this situation, assuming that Cached Mode is still enabled, what happens when Outlook is launched? Does it simply not add anything further to the OST to keep it at the 50 GB limit? If this is the case, does it then need to re-download any new items each time it launches to keep it at this file size?