4 Servers DAG plus witness server

I have 4 member DAG.  Two are in one network (network 1)  and the other 2 plus the witness server are in a another network (network 2).  Next weekend we are shutting down the 2 servers on network 1 because we are moving the office.  Would I have any issues because the other 2 servers in the network 2 plus the witness staying up.

Thanks
FundFireAsked:
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I QasmiTechnical LeadCommented:
If all the servers have the same mailbox databases
and you made the databases  on these 2 servers as active.
And the witness server is in the same network
then DAG will work , but will give errors for the other 2 servers.
If would be better if you suspend the database copies on the 2 servers shutting down
and then activate the copies when it is back online

Suspending and Resuming Database Copies

http://www.msexchange.org/articles-tutorials/exchange-server-2010/high-availability-recovery/uncovering-exchange-2010-database-availability-groups-dags-part4.html

Suspend Multiple Database Copies
http://www.msexchange.org/kbase/ExchangeServerTips/ExchangeServer2010/ManagementAdministration/SuspendMultipleDatabaseCopies.html

Moving the Active Database Copy to another DAG Member (aka Switchover)

When you have a planned outage and need to take a DAG member that holds one or more active database copies down for maintenance, it’s considered best practice to manually move any active database copies (aka performing a switchover) to another DAG member in the DAG. To move an active database copy to another DAG member using the EMC is accomplished by right-clicking on the respective database(s)
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FundFireAuthor Commented:
Thanks.
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