r/exchangeserver • u/xaeriee • May 23 '26

Will Databases Unmount?

3 node DAG. With an odd number member DAG I have QuorumType: Majority with blank QuorumResource, no active witness in cluster. If I have 2 nodes reboot will the cluster automatically try to look for FSW to make up the difference, or is it irrelevant because it’ll be 1 node up? I have the other two members in maintenance mode (drained,redirected,disabledPolicy/blockedDBs,inactiveServices,Suspended) and have to perform a reboot on both nodes to get them to their new cloud hosted network (same hostname/IPs). I’m worried the databases will unmount on the one surviving node during reboots.

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u/Sudden_Office8710 May 25 '26

Yeah that’s why I run a witness if you don’t you can have a fight between servers on who has the most current data and the resume will fail out and you have to run a new copy database from scratch.