A default Indexing Service and indexing location must exist before you enable mailboxes for archiving. After you enable the target mailboxes for archiving, the specified Indexing Service automatically creates an index for each new archive in the associated indexing location.

To control which Indexing Service is used for new mailboxes, you can set the default Indexing Service at the following levels:

When you create a Provisioning Group, the default Indexing Service is inherited from the Exchange Server properties. If an override Indexing Service is not specified in the Exchange Server properties, then the Indexing Service that is specified in the Enterprise Vault server properties is used.

See the "Adding index locations" chapter in the Installing and Configuring manual.