I haveExchange 2007 SP1 running on Windows Server 2003 R2 SP2. I justran abackup using NTBACKUP and selected the Microsoft Exchange Server\Microsoft Information Storenode in the selection list. I selected a backup type of "normal". After the job completed, the transaction logs remained.I expected thetransaction logsto be flushed after the backup completed based on past experience with Exchange 5.5/2000/2003 and comments made here:http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/b6d57c55-0a18-4f0b-b681-060476292ccb/Are transaction logs not flushed after using NTBACKP with Windows 2003/Exchange 2007?Any idea what I may have done wrong?Any insight is much appreciated.McR

Hi,Are you getting any event about backup completion in Application event log?When backup completes it logs event id 213 with source ESE and after that you can see event id 916 specifying range of transaction log files deletion. Check if you get any error in event log...Amit Tank | MVP - Exchange | MCITP:EMA MCSA:M | http://ExchangeShare.WordPress.com

Thanks for your post.I have this: Event Type:InformationEvent Source:ESEEvent Category:Logging/Recovery Event ID:223Date:2/24/2009Time:8:46:40 PMUser:N/AComputer:Description:MSExchangeIS (3660) First Storage Group: Starting the backup of log files (range D:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group\E000000ED1A.log - D:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group\E000000ED2D.log).**** The log files range fromE00000000DB.log toE000000EE4A.log Event Type:InformationEvent Source:ESEEvent Category:Logging/Recovery Event ID:224Date:2/24/2009Time:8:46:43 PMUser:N/AComputer:Description:MSExchangeIS (3660) First Storage Group: Deleting log files D:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group\E00000000DA.log to D:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group\E00000000DA.log.*** Notice it only deleted a single log file.Event Type:InformationEvent Source:NTBackupEvent Category:NoneEvent ID:8001Date:2/24/2009Time:8:46:43 PMUser:N/AComputer:Description:End Backup of 'server\Microsoft Information Store\First Storage Group' 'The operation was successfully completed.' Verify: Off Mode: Append Type: Normal Consult the backup report for more details.Here is the 213: Event Type:InformationEvent Source:ESEEvent Category:Logging/Recovery Event ID:213Date:2/24/2009Time:8:46:43 PMUser:N/AComputer:Description:MSExchangeIS (3660) First Storage Group: The backup procedure has been successfully completed.Thanks again for your help. Is it true that the logs should be deleted after the backup?McR

I have figured out what I did wrong. I did not select one of the mailbox databases for backup. After selecting the entire SG for backup, the logs cleared as expected.McR

Glad you solved the issue, and thanks for sharing it at here