I have 2012 R2 Failover cluster with two nodes.
When I try to add third node and run Validation test, I've got error in Validation Report:
"Two disks have been found on node Hyperv01.local.com with duplicate disk signatures or disk GUIDs. The disks involved are physical disk 2 and physical disk 12. There may be a Multipath I/O (MPIO) problem such as the software is not installed or is not
working properly. If MPIO is not involved, or MPIO has been verified as working, you must either mask one of these disks off at this node, or run validation and specify a disk list that includes only one of these disks, for example by using the Test-Cluster
cmdlet in Windows PowerShell."
But disk signature and disk GUIDs are different.
All disks connected via ISCSI.
Can anyone please help?
Thank you.