You are backing up a machine with Exchange Server. You notice that transaction logs are not truncated after a backup.
There are two ways to back up the Exchange Server data: you can either back up only the Exchange databases with a dedicated backup plan or you can back up the volumes where Exchange data reside (application-aware backup).
After a successful database backup, transaction logs are truncated.
Logs truncation after an application-aware backup depends on the agent that is used for backup:
- If you are backing up a physical or virtual machine where Agent for Windows is installed and activate application-aware backup option, transaction logs are truncated only if the VSS full backup option is enabled. This option is disabled by default.
- If you are backing up virtual machines using Virtual Appliance or Agent for VMware(Windows) and activate application-aware backup option, transaction logs are truncated automatically.
Enable VSS full backup:
- In backup management console, locate the backup plan and click the gear icon to change settings.
- Navigate to Volume Shadow Copy Service (VSS) and select Enable VSS full backup.
- Save changes.