Exchange 2010 databases are set up in a Database Availibility Group for redundancy. Exchange servers are using VSS and vzShadow.exe for proper application-level quiescing. After a backup, the following errors are observed in the application event viewer:
Log Name: Application
Source: MSExchangeRepl
Date: 6/16/2011 12:43:30 PM
Event ID: 2059
Task Category: Service
Level: Error
Keywords: Classic
User: N/A
Computer: **********.******.***
Description:
The required log file 102792 for User9\********** is missing on the active copy. If you removed the log file, please replace it. If the log file is lost, the database copy will need to be reseeded using Update-MailboxDatabaseCopy.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="MSExchangeRepl" />
<EventID Qualifiers="49156">2059</EventID>
<Level>2</Level>
<Task>1</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2011-06-16T19:43:30.000000000Z" />
<EventRecordID>32839</EventRecordID>
<Channel>Application</Channel>
<Computer>**********.******.***</Computer>
<Security />
</System>
<EventData>
<Data>User9\WVLVEXCH01</Data>
<Data>102792</Data>
</EventData>
</Event>
The backups for the members of the DAG are starting at the same time. vzShadow is running at the same time on both members with the result described.
Separate the backup times for the members of the Database Availibilty Group
