Hardware:
2x Dell PowerEdge R510
1x Dell PowerVault MD3220i
Background:
Servers connected to SAN via ISCSI through 2 host ports each via a Dell PowerConnect Layer 2 switch.
Running two Nodes with Hyper-V Core installs and Failover Feature Enabled.
Validated and setup Failover Cluster for server.
Failover works (IE. VMs will be moved to Node 2 when Node 1 goes offline)
Migrations will work (live, move and quick).
Problem:
When both servers where recently shutdown for power maintenance in the building, after being turned back on both servers failed to mount the Cluster Shared Volume properly.
The Shared Volume is showing Online in the FailOver manager, but in iscsicpl.exe the mount point for the volume is not set to c:\clusterstorage\volume1 but instead it /?/volume/{GUID}/
When trying to direct to c:\clusterstorage\volume1 it is listed but freezes when trying to access it.
If you remove the volume from shared it mounts properly.
TL:DR
Cluster shared volume doesn't mount after simultaneous restart of servers, only show the mount point as /?/volume/{GUID}/ cannot remount as shared.