About NetBackup and Microsoft Exchange Web Services
NetBackup uses Microsoft Exchange Web Services (EWS) to support a restore that uses Granular Recovery Technology (GRT). EWS provides support for the restore of individual mailboxes, mail messages, and public folders from an Exchange database backup.
To use EWS to restore individual items, the client throttling policy should be modified for the resource credentials you specify for the restore job. The client throttling policy is located on the destination client and enforces connection bandwidth and activity limits on the Exchange server. When NetBackup executes under a highly privileged account, it automatically creates a throttling policy and assigns it to the account. NetBackup cannot perform these actions with an account with minimal privileges. In that case, you need to create and assign the throttling policy when you set up the account.
If the user account is a domain administrator or Exchange organization administrator, 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. NetBackup creates and assigns the following roles:
SymantecEWSImpersonationRole
SymantecEWSImpersonationRoleAssignment
A minimal NetBackup user account does not have the privilege to make these assignments. Follow the instructions to create this type of account.