Exchange 2019 Create DAG and databases in Maintenance mode

Question

Hi,

My current environment is Exchange 2013 hybrid coexistence with 2019. 2019 servers are just installed and no mailboxes.

For some issues we putted Exchange 2019 in maintenance mode, but we would like to setup DAG and create databases for EXCH19. Can we do this when they are on maintenance mode?

Answer 1

Hi @Louis CI Lo ，

This is not recommended; maintenance mode is intended for maintenance tasks such as patching, updating, or repairing, and it indicates that the server is not available for normal operations.

The mode is usually enabled when administrators need to apply Security Updates (SUs) or Cumulative Updates (CUs). Exchange Maintenance Mode is the server state where all the server activities are suspended temporarily. All the Exchange services and components are put into the drain or inactive state.

Regards

Shaofan

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