How to Configure Circular Logging in Exchange Server 2007

Circular Logging feature was available in all Exchange previous versions. This feature allows Exchange server to overwrite transaction log files after the old transaction log data has been committed to the database. By default, this feature is disabled. The limitation of this feature is that in case of disaster, it will not be possible to recover any data more recent than the last full backup. And so Microsoft does not recommends using this feature.

How to Configure Circular Logging

1.  Open the Exchange Management Console (EMC).

2.  In the console tree, expand Server Configuration, and click Mailbox.

3.  In the work pane, right-click the storage group for which you want to enable or disable circular logging, and open its Properties.

4.  Select or clear the Enable circular logging check box.

5.  Click OK.

6.  Restart the Microsoft Exchange Information Store service to make your changes to the circular logging settings effective or dismount and then mount all of the databases in the storage group.

To Enable Circular Logging from the PowerShell:-

Set-StorageGroup -Identity "First Storage Group" -CircularLoggingEnabled $true

To Disable Circular Logging from the PowerShell:-

Set-StorageGroup -Identity "First Storage Group" -CircularLoggingEnabled $false