Dear All, I am facing one issue that i recently install DPM 2010 for Exchange 2010 backup. And i have 2 Mailbox Servers MBX1 and MBX2 with two database DAG. DB1 is mounted in MBX1 and copy MBX2 DB2 is Mounted in MBX2 and copy MBX1 Here my DB1 dtabase size is 60 GB and the logfiles size is 450 GB, And i will use DPM 2010 for Backup the database DB1 but its not truncating the logfiles. After the sucessfull full backup the all old logfiles are remaining in the folder. Please advice for the issue. Best Regards, Sanuj Mathelaveedu Systems Support Engineer | Customer Engineering & Support Services | Almoayyed Computers | P. O. Box 26259 | Manama - Bahrain | Switchboard: +973 17700777 | Ext: 285 | Fax: +973 17701211 | Mobile: +973 39328062 | email: Sanuj@almoayyedcomputers.com | web: www.almoayyedcomputers.com |

You might get a better response in the DPM Exchange Forum: http://social.technet.microsoft.com/Forums/en-US/dpmexchbackup/threads

Is there any third party software installed on the DAG members? Have Forefront Protection for Exchange Server 2010 been installed on the DAG members? Please check if there’s any related event in the application log on the DAG members Please run “VSSAdmin List Writers” on the DAG members, and verify if the status is stable and no error Please test the backup with the built-in windows server backup on the windows server Resources: Monitoring High Availability and Site Resilience Using Windows Server Backup to Back Up and Restore Exchange Data System State backup using DPM 2010 fails on Exchange Servers Exchange 2010 DAG transaction logs not truncating after VSS Full backup (Similar thread)Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Make sure that the databases aren't corrupt and intact with the transaction logs Jonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog

How's the issue currently?Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.