You have an Exchange organization. All servers in the organization have Exchange Server
2010 SP1 installed.
The organization contains a database availability group (DAG) named DAG1. DAG1
contains two Mailbox server named Server1 and Server2. Five databases are replicated in
DAG1.
You need to install Exchange rollup updates on Server1. The solution must not prevent
users from accessing their mailboxes.
What should you do first?
A.
run the Set-DatabaseAvailabilityGroup cmdlet, and then enable Datacenter Activation
Coordination for
DAG1.
B.
run the Set-MailboxDatabase cmdlet, and then configure all mailbox database copies as
lagged copies.
C.
Run the Suspend-MailboxDatabaseCopy cmdlet, and then switch over all mailbox
databases to Server2.
D.
run the Update-MailboxDatabaseCopy cmdlet, and then modify the mailbox database
Activation preference.
Explanation:
In situations where you have a planned outage/maintenance window or if you perhaps need
to seed a database, the first step is to suspend replication for the involved database(s). This
can be done both via the Exchange Management Console (EMC) and the Exchange
Management Shell (EMS). To do so via the EMC, you simply right-click on the respective
database copy/copies and select suspend in the context menu.
To do the same via the EMS, you can use the following command:
Suspend-MailboxDatabaseCopy –Identity MDB02\E14EX02
http://www.msexchange.org/articles_tutorials/exchange-server-2010/high-availabilityrecovery/uncoveringexchange-2010-database-availability-groups-dags-part4.html