To do this, you will need to go to the Web.Config file on the Server (Important: Make a copy before making changes), this will be located here:
C:\Program Files (x86)\Autodesk\ADMS Professional 2011\Server\Web\Services
Open the Web.Config file in Notepad, then after < switches > add the following:
< add name="LogFileDeletesBooleanSwitch" value="1"/ >
Once the line has been added, restart IIS (IISRESET) and you will begin seeing this information logged in the Server Logs:
08/02/2011 15:56:10 Files have been deleted from the vault.
User:'Administrator'; Vault name:'Vault'; Vault filestore root:'C:\ProgramData\Autodesk\VaultServer\FileStore\Vault'
Vault file:'$/Designs/05699952/TEST1-ISO 7047 (Z) - M4x16 - 4.8 - Z.ipt'; Relative filestore location:'000\000\000\000\000\000\128'
This is an extract from the Cracking the Vault, Manufacturing Community Blog