Backup are import for every platform where database exist and Exchange Server database files such as EDB, STM and LOG backup should be store every time so that we can take help of their when main file get corrupt. So always make sure that you have saved backup for your database files in which you're working. On other side I am going to place a helpful post which is based on Exchange Server backup recovery and would like to request read it carefully using the link: Exchange Server Backup Issue

 

The Exchange Backup Recovery tool makes it easy to recover Exchange BKF files securely and efficiently. When restoring backup files, this Exchange BKF repair software does not affect the original archive. This BKF fixer recovers data from EDB, STM, and LOG files. It has a user-friendly graphical interface that makes it easy for a non-technical user to use the tool.

 

A user can quickly fix corrupt backup files on Microsoft Exchange Servers using Exchange BKF Repair Tool. It is the most effective method for removing the majority of errors from a file. It quickly scans the massive backup files.