We are running two Excahnge 2010 for redundnacy. When we try to restore a contact uisng Barracuda backup, we can't make it work. So we open a case with Barracuda tech support. They said they have restored the database on a Recovery Folder of the mail02 (standby server). But we can't see the database in the fodler. The Event Viewer logs ID 2137 every 5 minutes as shown below. After I do more study, we found they restored the database in the original location meaning the restored database replaces real database so that we get the replication error. How can we fix it? Log Name: Application Source: MSExchangeRepl Date: 11/19/2010 9:28:20 PM Event ID: 2137 Task Category: Service Level: Warning Keywords: Classic User: N/A Computer: EXCH-MAIL02.domain.org Description: RPC request to the Microsoft Exchange Information Store service for log truncation failed for database Exec Database 1\EXCH-MAIL02. Error: 4294965485. Bob Lin, MS-MVP Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net How to Setup Windows, Network, VPN & Remote Access on http://www.howtonetworking.com

Thank you, Anil. This is the answer I am looking for. For a future reference, I have create a step by step with screenshot here: How to Update Database Copy in Exchange 2010 - http://www.howtonetworking.com/email/exchseeding1.htmBob Lin, MS-MVP Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net How to Setup Windows, Network, VPN & Remote Access on http://www.howtonetworking.com

I got the same type of issue when we turned off circular logging within our DAG Environment, will a restart all nodes correct this warning.