Rules for creating LUNs
To avoid problems creating LUNs when using SnapDrive, you must keep some rules in mind.
1. Create LUN names using US-ASCII characters only, even when you are using non-ASCII operating systems.
2. If you are adding the CSV LUN to a Windows Server 2008 or 2012 cluster, make sure to create
the CSV LUN on the node that owns the cluster group in which you are creating a new physical
1. Shared disks on Windows Server 2008 and 2012 cluster nodes that do not own the disks
often display as offline in the MMC Disk Management utility; however, the disks continue
to function normally on all nodes in the cluster.
2. Use the LUN path instead of the UNC path to create a LUN.
When you use the UNC path, disk creation fails with the error A device attached to the system is not functioning.
Refer below document, page no-42
If this post resolved your issue, help others by selecting ACCEPT AS SOLUTION or adding a KUDO.