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Totally agree with Akhater. <br />
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Moreover, putting a node into maintenance mode before rebooting is also a good practice for Fail-over clusters.
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Totally agree with Akhater.

Moreover, putting a node into maintenance mode before rebooting is also a good practice for Fail-over clusters.

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Quick question, is there a reason to put a DAG node into maintenance mode if the node isn't hosting any active copies of a mailbox DB?<br />
I generally don't put them in maintenance mode when I need to reboot or even install windows updates since they only have replicas, but I was wondering what do you think? The Nodes hosting active DBs I always put in maintenance mode before I do anything on that member.
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Quick question, is there a reason to put a DAG node into maintenance mode if the node isn't hosting any active copies of a mailbox DB?
I generally don't put them in maintenance mode when I need to reboot or even install windows updates since they only have replicas, but I was wondering what do you think? The Nodes hosting active DBs I always put in maintenance mode before I do anything on that member.

Exchange 2010 DAG Node

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.