SCDPM 2012 R2 Backup with Exchange 2013 SP1 CU6 DAG

Question

Hi,
Correct me if I'm wrong.
DAG setup as follow,
1. Server1\MBX01 (Active)
2. Server2\MBX01 (Passive)
DPM
1. Select Full for Active
2. Select Copy for Passive
We always select active copy so that logs can be purge.  On the other hand, if we select backup passive copy and purge logs. My guess is logs will be replicated from Active copy.  
How about when active copy change passive copy?  Do I need to change the backup option?
Please advice. Thanks.
Kelvin Teang

Answer 1

Hi,
It sounds like an exchange problem - this was the application event log entry on the passive node after taking an incremental backup from DPM.  After the below event was posted, I checked both active and passive node and the logs were successfully truncated. 
It took a few minutes before the logs were deleted.
Log Name:      Application
Source:        MSExchangeRepl
Date:          12/9/2014 3:40:46 PM
Event ID:      2046
Task Category: Exchange VSS Writer
Level:         Information
Keywords:      Classic
User:          N/A
Computer:      MJLC-E14-2.mjacquet.com
Description:
The Microsoft Exchange Replication service VSS Writer instance 5cc17efd-1acc-41c3-b68a-f667027032b6 has successfully completed the backup of database 'N1-MB2'. 
Database log truncation has been requested for this database. Log truncation will occur on the active copy after the next log generation is created. Log truncation will occur automatically on the passive copies after that log file is copied.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="MSExchangeRepl" />
    <EventID Qualifiers="16388">2046</EventID>
    <Level>4</Level>
    <Task>2</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2014-12-09T23:40:46.000Z" />
    <EventRecordID>399855</EventRecordID>
    <Channel>Application</Channel>
    <Computer>MJLC-E14-2.mjacquet.com</Computer>
    <Security />
  </System>
  <EventData>
    <Data>5cc17efd-1acc-41c3-b68a-f667027032b6</Data>
    <Data>N1-MB2</Data>
  </EventData>
</Event>
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