For Exchange 2010, NetBackup uses Microsoft Exchange Web Services (EWS) to support a backup that uses the Granular Recovery Technology (GRT). EWS provides support for the restore of individual mailboxes, mail messages, and public folders from an Exchange 2010 database backup.

To use EWS to restore individual items, the client throttling policy is disabled for the resource credentials you specify for the restore job. The client throttling policy is located on the Client Access Server and enforces connection bandwidth limits on the Exchange server.

NetBackup also creates an impersonation role and a role assignment for Exchange Impersonation. Exchange Impersonation role assignment associates the impersonation role with the NetBackup resource credentials you specify for the restore job.