Symantec 11859262 Datasheet download pdf (Page 173)

Backing up VSS-aware

databases

This appendix includes the following topics:

■ About backing up VSS-aware databases

■ About backing up non-VSS-aware databases

About backing up VSS-aware databases

Symantec Backup Exec System Recovery integrates with Microsoft Volume Shadow

Copy Service (VSS) to automate the process of backing up VSS-aware databases

like production Exchange 2003, transaction logs on Exchange 2003, and Windows

2003 Domain Controller.

VSS-aware databases are auto-enabled and cannot be turned off. VSS lets

administrators create a shadow copy backup of volumes on a server. The shadow

copy includes all files and includes open files.

When it creates a recovery point, Backup Exec System Recovery alerts the Volume

Shadow Copy Service. VSS then puts the VSS-aware databases into a temporary

sleep state. While in this quiesced state, the database continues to write to

transaction logs while it is being backed up. Once the databases are quiesced,

Backup Exec System Recovery takes the snapshot. VSS is then notified that the

snapshot is completed. The databases are awakened, and the transaction logs

continue to be committed to the database. Meanwhile, the recovery point is created.

The databases are only quiesced for the snapshot, and are active for the rest of

the recovery point creation.

Backup Exec System Recovery supports VSS Exchange Server 2003, which

implements Microsoft’s Volume Shadow Copy Service (VSS) technology. There

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Symantec 11859262 Datasheet Page 173