The Exchange Agent supports the Microsoft Volume Shadow Copy Service (VSS), a snapshot provider service only available on Windows Server 2003 or later. Using VSS, a point-in-time view of the Exchange database is snapped and then backed up, leaving the actual Exchange database open and available for users.
Offhost backup enables the backup operation to be processed on a Backup Exec server instead of on the Exchange Server. Moving the backup from the Exchange Server to a Backup Exec server enables better backup performance and frees the remote computer as well.
If the Advanced Disk-based Backup Option (ADBO) is installed on the Backup Exec server, you can use the Backup Exec Granular Recovery Technology (GRT) option when you create an offhost backup for the Information Store.
This topic includes information on the following subjects:
The Exchange Agent snapshot does not support the following:
Mixing snapshot backups and non-snapshot backups
Due to a Microsoft Exchange limitation, if non-snapshot backups are run as part of a backup strategy, then snapshot backups should not be run. If snapshot backups are run, non-snapshot backups should not be done.
You can find a list of compatible storage at the following URL:
The type of backup method that is available when using VSS with the Exchange Agent depends on the version of Exchange Server:
Table: Available backup methods for Exchange snapshot versions
You can run a snapshot backup for Exchange data.
Table: Configuring a snapshot backup for Exchange data
Symantec recommends that you perform consistency checks before running a snapshot backup.
Create an Exchange backup job.
If data that is not supported for snapshot backup is included in the backup selections, checkto allow the job to complete with errors.
This option is on the Advanced Disk-based Backup options on the Backup Job Defaults dialog box and on the Options dialog box for a backup job.
Schedule or start the backup job.
See Backing up data
The Exchange Agent snapshot fails.
If incremental or differential backup methods are selected, and Exchange Server 2007 or later is not installed.
If circular logging is enabled, and incremental or differential backup methods are selected.
If an unsupported version of Exchange is installed. To verify supported versions of Exchange, see the Backup Exec Software Compatibility List at the following URL: