How Granular Recovery Technology works with the Exchange Information Store
Backup Exec Granular Recovery Technology (GRT) lets you restore individual items from an Information Store backup without having to restore the whole backup. You should review the requirements for a GRT-enabled backup before you configure it.
When you select items to restore from GRT-enabled backups, you cannot select the top level of the Information Store. To restore these items, you must restore the entire mailbox.
Note: When you perform a granular restore of a linked mailbox, shared mailbox, or site mailbox, do not select theRecreate user accounts and mailboxes if they do not already exist on the destination serveroption. These types of mailboxes must be created manually before you perform the restore. However, you can restore user accounts for linked mailboxes when you perform a granular restore of Active Directory from a backup of a domain controller. For more information about creating these types of mailboxes, see the Microsoft Exchange documentation.
You can also enable GRT when you create an off-host backup for the Information Store. Off-host backup lets Backup Exec move the backup process from the host computer to the Backup Exec server. The host computer is the remote computer that contains the volumes that you selected for backup. To run a GRT-enabled off-host backup, you must install the Backup Exec Advanced Disk-based feature on the Backup Exec server.
GRT and Microsoft Exchange Web Services
Backup Exec uses Microsoft Exchange Web Services (EWS) to support the Granular Recovery Technology feature. EWS provides support for the restore of individual mailboxes, mail messages, and public folders from an Exchange Server 2010 or later database backup.
Note: You do not need to install the MAPI Client and Collaboration Data Objects package if you use EWS.
To use EWS to restore individual items, Backup Exec disables the client throttling policy for the resource credentials you specify for the restore job. The client throttling policy enforces connection bandwidth limits on the Client Access server.
Backup Exec also creates an impersonation role and a role assignment for Exchange Impersonation. Exchange Impersonation role assignment associates the impersonation role with the Backup Exec resource credentials you specify for the restore job.
Backup Exec creates and assigns the following roles:
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VeritasEWSImpersonationRole
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VeritasEWSImpersonationRoleAssignment
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