Barracuda Backup Servers, firmware 1.2.009 and above, and associated Exchange Servers (Versions 2000, 2003, and 2007) running the Barracuda Backup Agent.
The Barracuda Backup Agent for Microsoft Exchange Server provides a full backup of the Exchange Storage Group. The Exchange Storage Group, and its associated transaction logs, is the most important data to back up on your Exchange Server to ensure your email database is available in the event it becomes damaged or unrecoverable. A Storage Group is a container for your email database and its associated system and transaction log files. Exchange uses transaction logging to commit new and changed data to the database, and to ensure that records of the transactions exist if a store is damaged between backups.
If a disaster occurs, and you must rebuild a server, you can use the latest transaction log files to recover your database. If you have access to the latest backup and the transaction log files since the last full backup, you can recover all of your data. The Barracuda Backup Agent for Microsoft Exchange Server backs up and restores the entire Storage Group; it does not allow a backup or restore of individual mailboxes or individual databases within a Storage Group.