This morning we conducted a high availability test on our virtual infrastructure. We have 2 esxi 6.0 hosts connected to a dell md3400 direct attached storage. When our esxi host was shutdown the HA worked fine, but the LUN from the storage was gone.
All looks well on the Storage Array itself, the host is in the group and LUN and port identifiers for the host appear to be fine on the MD3400. On the host the PCI storage adapter is there, but no storage.
I did a re-scan on the host and rebooted the host again and still no storage.