Configuring DAG with different CU level ?
I've got multiple Exchange server 2013 Standard mailboxes scattered around 3 different AD sites (same domain).
AD Site 1 - PRODEXC1-VM - Mailbox Server &CAS Role - SP1
AD Site 2 - PRODMBX01-VM - Mailbox Server - SP1
AD Site 3 - PRODEXC2-VM - Mailbox Server &CAS Role - SP1+CU3
I'd like to deploy additional 3x Mailbox server on each site so that I can build DAG for each AD site.
As I read today, the latest CU is CU16, so can I install the new 3x mailbox server above with CU16 while the other is still as is ?
This is to avoid any outage.
So if I configure the DAG during the business hours, is there any downtime required for the current production mailbox server ?
No you would not have any downtime during business hours building the DAG, however I would wait until after hours to add the members to the DAG and create the Database copies,
Hi Tim,
May I know why need to wait after hours :-o ?
My understanding is that when creating the IPless DAG, the Database copy is not done straight away, or can be scheduled.
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