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Exchange 2013 DAG Failover Reason

Posted on 2014-12-12
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Last Modified: 2016-06-19
Hi,

I have a 2node Exchange DAG on 2013 SP1, all is fine however quite often 2 of my mailbox DBs flip over to server 2, always the same pattern.  What's the best way to determine the reason why?

DB1 & DB2 sit on Exchange 1 for a while and then eventually move over, I checked logs but impossible to track!
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Question by:pjmartins
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4 Comments
 
LVL 19

Expert Comment

by:R--R
ID: 40496456
Check exchange logs on server in event viewer.
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Expert Comment

by:Amit
ID: 40496610
This might help you to find root cause
http://exchangeserverpro.com/database-failover-wrong-server/
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Accepted Solution

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pjmartins earned 0 total points
ID: 40505695
Guys, found the answer.... Was due to NICs going to sleep!  Take note as easily missed...
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