Challenge
During Exchange 2010 application aware backup with “Copy only” option enabled you notice following events in Application event log on Exchange server:
Log Name: Application
Source: MSExchangeIS
Date: 5/10/2018 5:38:39 PM
Event ID: 9782
Task Category: Exchange VSS Writer
Level: Error
Keywords: Classic
User: N/A
Computer: Exchange2010
Description:Exchange VSS Writer (instance 7333fe6c-94b5-4d0f-b62f-517eec18e04d:2) has completed the backup of database '<Database name>' with errors. The backup did not complete successfully, and no log files were truncated for this database.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="MSExchangeIS" />
<EventID Qualifiers="49193">9782</EventID>
<Level>2</Level>
<Task>41</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2018-05-10T14:38:39.000000000Z" />
<EventRecordID>1801912</EventRecordID>
<Channel>Application</Channel>
<Computer><Server name></Computer>
<Security />
</System>
<EventData>
<Data>7333fe6c-94b5-4d0f-b62f-517eec18e04d:2</Data>
<Data><Database name></Data>
<Binary>436F707900</Binary>
</EventData>
</Event>
Cause
Copy only backup does not perform transaction logs truncation which may result in the mentioned event being generated.
Solution
Event can be safely ignored.
