Can Discover scan Symantec's Enterprise Vault? Can the contents of the Vault be extracted and scanned?
Workaround
One way to achieve this is to export an archive from Enterprise Vault to a .pst file and then scan the contents of the .pst. The original data remains in Enterprise Vault and none of the Symantec DLP policies are applied to the vaulted items. With Enterprise Vault File System Archiving (FSA), once the file is opened, the archived item will be retrieved to file system and subjected to the Symantec DLP Policies.
Note: pst scanning is only available with Vontu DLP version 9.0 and up.