You can create a backup from an active copy or from any passive copy in an Exchange
Server Database Availability Group (DAG).
When you use
Data Protection for Exchange with DAGs, consider the following guidelines.
- Use a DAG member to store DAG database backups.
- Ensure that the same VSS policy applies to all DAG members.
- Ensure that the first backup is a FULL backup
when you move backups to DAG member backups.
- Ensure that previous backups are manually deleted after you move
backups to DAG member backups, assuming that those backups are no longer
needed.
- Ensure that backups to LOCAL are restored only
to and expired from the Exchange server on which the backup is created.
- Ensure that database restore operations run only on the active
database.
The high availability feature of DAG backups improves Exchange Server data backups and
data recovery. When you back up data in a DAG environment, follow these guidelines: