Un-cluster storage added to Windows Failover Cluster Manager

sql-server storage-area-network windows-server-2012-r2 failovercluster windows-cluster

I did exactly what you did - I was adding a new node to an SQL 2014 AlwaysOn cluster and I forgot to uncheck the "Add Storage" button at the end of the wizard.

To get the storage back, and your cluster online:

Remove all the disks "Cluster Shared Volumes" (Right-click, Remove from Cluster Shared Volumes)
Remove all the disks from the cluster completent (Right-click, Remove, "Yes")
Wait for a few minutes for each node in the cluster to remove its disks from being "in the cluster"
On each node in the cluster, put each disk that is now offline, back online (this can be a slow and annoying process when doing this to remote servers on the far end of a slow WAN. Hope you don't have too many).
Start the SQL Server service on all the affected nodes (don't forget the SQL Server Agent service as well)

For bonus points

Pray this wasn't a production cluster
Smack yourself repeatedly so you remember to always uncheck the button to add cluster storage in the cluster wizard

thatBehavior

Updated on September 18, 2022

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thatBehavior over 1 year

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s.kuznetsov about 3 years

Welcome. Tell us more about your problem, pls. Nothing is clear from your description.

joeqwerty over 9 years

How is the server connected to the disk? Direct, iSCSI, Fiber Channel?
LowlyDBA - John M over 9 years

connected via iSCSI
LowlyDBA - John M over 9 years

If it's still in the cluster, online, and assigned to Cluster Shared Volume, I can see them in DM. If I evict the node and remove them from the cluster, then they are offline in DM but visible with all right-click options grayed out.
joeqwerty over 9 years

Are you evicting the node first or are you removing the disk from the Cluster Shared Volumes first?
LowlyDBA - John M over 9 years

I've tried both