Exchange 2013 with different CU levels.
Hello, I have a 5 server exchange with 3 of them on a DAG and 2 of them hosting DB's for different elected offices that have to be seperate from the DAG. They are all currently on CU15, I need to update all of them to CU18. Can the be done over the course of a few days or do I have to do them all at once?
They are all exchange 2013 on WS2012 R2
They are all exchange 2013 on WS2012 R2
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I figured I would need to do them at the same time. I was more worried about the .NET update affecting the none DAG members. Sounds like I will be doing all them at the same time. Thanks for the help.
ASKER
Thank you.
It is recommended to have the same version with same CU in DAG in order to work correctly.
Cheers
Viktor