Warning W8644

Microsoft Exchange Server [ <Exchange server name>\dbaexdbis ] - converted to Full backup since Circular Logging is enabled or previous full backup is missing.

Module:

Database Agent

Reason:

• If circular logging is enabled, Exchange only supports restoring from the full backup image. Therefore, the Agent for Microsoft Exchange Server only performs a full backup in this scenario.
• This warning may also be reported if a full backup was not performed before a differential/incremental backup.

Action:

If you want to perform a differential or incremental backup of one storage group, disable its circular logging option in Exchange.

If a previous full backup is not performed, no action is needed because the Agent for Microsoft Exchange Server converts a differential or incremental backup to a full backup automatically.