About backing up VSS-aware databases
|Article:HOWTO21356|||||Created: 2009-01-29|||||Updated: 2013-10-17|||||Article URL http://www.symantec.com/docs/HOWTO21356|
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 during the backup. After the databases are quiesced, Backup Exec System Recovery takes the snapshot. VSS is then notified that a 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 Exchange Server 2003 or later, which implements Microsoft’s Volume Shadow Copy Service (VSS) technology. However, if the database load is heavy, the VSS request might be ignored. Create recovery points at the lightest load time.
Article URL http://www.symantec.com/docs/HOWTO21356