Your network contains a single Active Directory forest. The forest contains two sites named Site1 and Site2.
You have an Exchange Server 2016 organization. The organization contains two servers in each site. You have a database availability group (DAG) that spans both sites. The file share witness is in Site1.
If a power failure occurs at Site1, you plan to mount the databases in Site2.
When the power is restored in Site1, you need to prevent the databases from mounting in Site1.