The local Administrators group must have full access to the folders that you use for index locations and the files in them. Unless your policies dictate otherwise, these files and folders should not be accessible by anyone else.
See Securing data locations.
To create an index location
In the left pane of the Administration Console, expand the Enterprise Vault site hierarchy until the Enterprise Vault Servers container is visible.
Expand the Enterprise Vault Servers container.
Expand the server that runs the Indexing service for which you want to add an index location.
In the right pane, right-click the Indexing service and, on the shortcut menu, click Properties.
Click the Index Locations tab.
Click Add. Enter the password to the Vault Service account if you are prompted to do so.
In the Choose Folder dialog, select the folder that you want to use as an index location.
Click Help if you need help to select or create the location.
When you create a new index location, Enterprise Vault creates eight new subfolders in the folder you select. These subfolders are called
, and so on. Enterprise Vault uses these subfolders to store the indexes.
See About Enterprise Vault index locations