For many people it may seem like an 'easy' question but for administrators new to Enterprise Vault who have deployed some or all of the available components, a question which sometimes pops up is :

How do I find the EV Vault Cache location?

The first thing to note is that this can be customised using the Desktop Policy setting:

If you don't change it then it will normally be located within the users profile folder, either c:\Documents and Settings\Username... or c:\users\Username...

But rather than guessing where it is the best thing to do is to use the Outlook Add-in Client trace to find out exactly where it is.  When you open the client trace file look for OVROOT:

It is shown with MINIMUM tracing or higher..  ie not the 'Information' setting or lower.