We have a Hyper-V 2012 Cluster, with 2 nodes Windows Server 2012. The Shared Storage is an HP Storage. We configured Failover Cluster, and everything works well. We configured SAN, and everything seems to be in working order.
On the Hyper-V Cluster, we have 3 Virtual Machines. They all work well, and they can move from one node to another no problem.
From the HP San, we allocated a 40GB drive for each virtual machine, all WWPN's are allocated correctly, tripled checked that. When we connect to the virtual machines, the drives appear as you expect, and you can use them ass you wish. So we configured certain applications.
Here's the thing. After we restart a VM, the drive allocated from the SAN no longer appears, neither in Windows Explorer or Computer Management. And here is the weird thing, if we live migrate that virtual machine to the other node, the drive automagically appears again like nothing ever happened. Restart the VM again, it disappears, live migrate, it reappears.
Any ideas on how to fix this? I mean I want that drive to be permanently attached to the VM. Here's a screenshot how it appears in Hyper-V and HP Storage Manager