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Dismounting database in Exchange 2010 Cluster

We upgraded to Exchange 2010 from 2003 about a year ago.  On numerous occasions, we ran out of disk space in our 2003 setup because of the transaction logs not being truncated properly.  We had enabled circular logging in the 2003 environment so when we upgraded to our 2010 environment, we kept circular logging enabled.
We now have a good backup solution in place where the logs should be backed up and truncated appropriately so I'd like to disable the circular logging so I can actually setup an incremental backup.
I've seen that in order to do that, the database will need to be dismounted and then remounted.   That seems pretty easy only we're in a cluster environment.  We have 2 nodes in an active/passive setup with load balancing.  Whenever I reboot the servers, I always manually switchover the server so I'm rebooting the passive node.
If I dismount the database, is that going to harm the cluster setup or possibly corrupt data?
If I take one of the servers offline, then I only have the one copy of the database, but again will that corrupt data if I dismount the database?
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skbarnard
Asked:
skbarnard
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2 Solutions
 
ABCStoreCommented:
Short answer - no, it will not harm your cluster setup.
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
If I dismount the database, is that going to harm the cluster setup or possibly corrupt data? - Nopes

If I take one of the servers offline, then I only have the one copy of the database, but again will that corrupt data if I dismount the database?  - Nopes

- Rancy
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Let me know if you have further queries or want to clarify some doubts :)

- Rancy
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skbarnardAuthor Commented:
I'm assuming there would be some interruption to email service when I dismount a database?
Thanks for your responses.
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Absolutely no mailbox access.

But when you have DAG and failover only take some seconds and users might not even understand the interruption in service.

- Rancy
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skbarnardAuthor Commented:
It's good to know data won't get corrupted and that I'll need to do this after hours.
Thanks.
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