Requirements for the Offhost Backup feature (part of the Advanced Disk-based Backup Option)

Article:TECH48516  |  Created: 2006-01-18  |  Updated: 2012-12-27  |  Article URL http://www.symantec.com/docs/TECH48516
Article Type
Technical Solution


Issue



Requirements for the Offhost Backup feature (part of the Advanced Disk-based Backup Option)


Solution



About Offhost Backup:

The Symantec Backup Exec for Windows Servers Advanced Disk-based Backup Option (ADBO) provides the "Offhost Backup" feature.
 
  • The offhost backup feature enables Backup Exec to move the backup processing from the remote computer that contains the volumes selected for backup to the Backup Exec media server.
  • The Microsoft Volume Shadow Copy Services (VSS) provider is used for each volume in the offhost backup.
  • An offhost backup job is performed on one remote computer at a time.
  • Offhost backups cannot be performed on the local media server



The following steps are performed during the Offhost backup process:
 
  • The offhost backup creates a snapshot of the volume(s) that are selected for backup on the remote computer.
  • The snapshots are then imported to the media server, where they are written to the selected backup destination.
  • After completion of the backup, the snapshots are deported from the media server and mounted back on the remote computer and resynchronized with the source volume.



Offhost backup supports the following:
 
  • Microsoft Volume Shadow Copy Service (VSS).
  • VERITAS Storage Foundation for Windows (VSFW).
  • Backups for NTFS volumes that use the full, incremental, and differential backup methods.
  • Microsoft SQL Server 2000 database backups by the Backup Exec Agent for SQL Server.
  • Exchange Agent backups for Microsoft Exchange Server 2003 (Service Pack 1)/ 2007 instances that run on Windows Server 2003. Support for the option to use Backup Exec Granular Recovery Technology for Exchange Agent backups is included.



Requirements for Offhost Backup:


The media server:
  • Must have Backup Exec for Windows Servers version 12.5 or later installed.
  • Must have the Advanced Disk-based Backup Option installed.

The remote computer:
  • Must have the Backup Exec Remote Agent for Windows Servers version 12.5 or later installed.

The media server and the remote computer:
  • Must possess a software or hardware VSS provider capable of transportable snapshots.
  • Must have Microsoft Windows 2003/2008 SP1 or later with the latest VSS hotfixes.
  • Both media server and remote system must have identical operating systems.
  • Must have the ability to access the disks that are shared between the media server and the remote computer.



Requirements for Offhost Backup When Using the VERITAS Storage Foundation for Windows Provider :

1. VSFW version 4.2 or later must be installed on the media server and on the computer that contains the volumes that you want to back up.

2. The VSFW FlashSnap option must be installed on the computer that contains the volumes that you want to back up.

3. Use the VSFW FlashSnap Snap Start command to mirror the volumes on the remote computer. The offhost backup option does not create mirrored volumes or resynchronize volumes that are already created and split.

4. Confirm that the mirrored volumes that you create with the VSFW FlashSnap option reside on disks that are shared between the remote computer (the computer containing the volumes to be backed up) and the media server.

5.  All volumes selected for offhost backup using the VSFW FlashSnap provider must belong to the same disk group. A maximum of seven volumes can be snapped at one time.

6. Do not select dynamic volumes and basic volumes for the same offhost backup job because the VSFW FlashSnap option cannot perform snapshots of basic volumes. Symantec recommends that you use other backup methods for backing up basic volumes if the VSFW FlashSnap provider is selected.

7.  If the computer on which you want to perform an offhost backup is in an environment with the Central Admin Server Option and the Veritas Cluster
Server installed, and if failover occurs to a Veritas Cluster Server node, you may need to manually clean up the snapshots before restarting the offhost
backup on the failover node. Refer to the VSFW documentation for details.

Supplemental Materials

SourceUMI
Valuev-79-57344-34099
Description

The offhost backup option cannot be used to back up the local media server. This option is only available to back up remote computers.




Legacy ID



284355


Article URL http://www.symantec.com/docs/TECH48516


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