3 DAG node Maintenance

Question

Hello,
I need to perform maintenance on my 3 DAG node. My primarily is in a Data center in Los Angeles CA, and DR site is in Miami, FL.  MB1 holds all the active databases, MB2 and MB3 passive database copies. MB3 is on a DR site.
What is the correct procedure and process to accomplish this with limited user interruptions or creating more issues ?
Please advise,
JOe
My DAG environment
Exchange 2010 SP3 RU2
Windows 2008R2 enterprise
Data center 1 in LA
MB1 Active copy
MB2 Passive Copy
cashub1,cashub2,cashub3
DR Data center 2 in FL
MB3 passive copy.
cashub4

Answer 1

In answer to your questions:
Do you mean, the following steps:
on mb3 mailbox, I run StartDagServerMaintenance.ps1 , performing maintenance, than StopDagServerMaintenance.ps1, reboot  mb3 and check all services are running, than follow the same steps for mb2 and mb1?  If I misunderstood or if there are
better alternatives, please advise.
Yes.  No need to move the databases until you need to patch the server hosting them.
I am not clear as mb3 and mb2 contain passive data base copies, and mb1 has all active database copies.  would mb2 and mb3 remain passive, until I do maintenance on mb1 ?
Yes.  As I said, why move the databases if you don't need to?
When I perform maintenance on MB1,  and running StartDagServerMaintenance.ps1 follow by  StartDagServerMaintenance.ps1 when maintenance is completed, will it automatically switch-over to MB2 or MB3? or do I have to do the switch over manually.
I recommend you move the databases manually, and you specify that they be moved to MB2.  If they are moved to MB3, all users with mailboxes in those databases will need to exit Outlook and reopen it to get into their mailbox.  If you have a CAS
Array in LA, this won't be necessary.