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Scotch TechFlag for United States of America

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Exchange 2013 - Passive Database disk running out of space

We're running Exchange 2013. We have a DAG with 3 copies of a DB. One of the DB's is on a server in our DR site.
It's running low on space, I need to know what happens to the Active database copies on the other server if the disk runs out of space on the DR servers.

Reason is a consultant told us that if the db copy disk runs out of space, the other copies including the active copy will go offline.

I can't find any documentation.
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Edward van Biljon (MVP)
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The thing is it won't be able to update and will dismount and your catalog will go into a failed and suspended state. I would rectify this as soon as possible
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Is there any reason, why one of your DB copy going out of disk space. I assume you have same disk size for all DB's. What exactly taking the space, is DB size or log. Are you taking full backup, to clear up the logs.
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Not the same size. We just need to keep these maintained until we move to new servers and Exchange 2016 within the next 2 months. I really just need to know what happens when the passive copy runs out of space. If the Active copy remain active and functions, then I am not too concerned, can I can just remove that copy.

Are there any articles stating what would happen in this scenario?
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I'm not concerned with re-seeding as we will have new servers within 2 months. We still have 2 copies in the primary datacenter, the DR is a 3rd copy. I just want to hold off as long as possible, hopefully until we get the new servers.

I just need to confirm 100% that the the active database will remain acitve/online uninterrupted if a passive copy disk runs out of space.
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If you have 3 mailbox servers holding the same copy please go ahead and remove the passive copy your active will stay on-line as commented by Edward. Add it back once you are done with the storage upgrade/expansion.