Perhaps a lesser known feature of Enterprise Vault is an option that can be added to the WEBAPP.INI file to allow users to do ‘basket restores’ to a PST file. If you’ve never tried it then it is something that can be given a quick run through in a lab.
There is, however, a little gotcha that I came across the other day.
The issue is that the items when they land in the PST file appear as unread, losing the status of how they were when they were archived. This appears to affect Enterprise Vault 10 and Enterprise Vault 11. It might not be something that is a problem for many of users, after all you might not have this feature enabled. But if you do, then well, there is a technote about the issue now (interesting spellings in there too!):