This is using a single MS Exchange 2010 server in Windows 2008 AD domain. There wasn't any regular backup software, and I found that about 350 GB exchange logs were accumulated. Anyway, the database is about 80 Gb. So, I need to truncate the log and then purge them. There wasn't any backup software install, so I decided to use MS Server backup.
I open server backup, and on the list, choosing the above mailbox database for backing up. I also chosen "full" backup option. After that, start the backup. Process seems working fine until the end and it ended 100%. However, the backup status is "completed with some warning" with yellow asterisk. In the application event, there were a few events as follows:
Exchange VSS Writer (instance b422aee7-b023-4f38-878d-6180d7d59bf5:3) has completed the backup of database 'Mailbox Database 0408027073' with errors. The backup did not complete successfully, and no log files were truncated for this database.
Very much appreciate any help and guidance