Windows 2012r2 Failover Cluster - Chkdsk scan needed

lstanke
lstanke used Ask the Experts™
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I have a 2 node windows 2012r2 cluster.  One of the cluster storage volumes shows a message "Chkdsk scan needed on volume."  

Im trying to understand what is required to do this.  Does this have to be done in a maintenance window?

This is a 3tb volume, so if things have to be offline Im wondering how long that would take (I know it depends on equipment)

My other option would be to just migrate the vhdx files to another CSV and just delete this CSV.

Any thoughts or directions are appreciated.
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JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018
Commented:
I cannot comment on if you wish to / whether you move the server.

There is no harm in running CHKDSK with no parameters to see what is going on.

On newer systems, you can run CHKDSK /SCAN to make online repairs. I have done this with no issue.
IT Product Manager
Top Expert 2009
Commented:
Here is a detailed guide from Microsoft: https://technet.microsoft.com/en-us/library/cc772587(v=ws.11).aspx
Another guide on running CHKDSK and defrag on CSV: https://blogs.msdn.microsoft.com/clustering/2014/01/01/how-to-run-chkdsk-and-defrag-on-cluster-shared-volumes-in-windows-server-2012-r2/
3TB volume with CHKDSK could take a while. But should not be usually longer than 10 minutes.

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