I have determined that in order to use the shared LUN piece of the Intel Modular Server, it appears, that the shared volume must be the only virtual disk within a Pool. Here is a more in depth explanation:
In the IMS (Intel Modular Server) in order to use the storage system the user must setup Pools. A Pool is made up of any number of drives. Then VDs (Virtual Drives) must be carved out of the Pools. Then the VDs are "assigned" to a server or multiple servers. Just like a SAN.
When I had the following setup the shared storage failed:
Pool1: One VD containing an ESX installation.
Pool2: One VD containing an ESX installation and a VD VMFS Store shared between both ESX servers.
When I changed my Pools to the following it has been working fine:
Pool1: One VD with two VDs both containing an instance of ESX.
Pool2: One VD containing a single VMFS store shared between the two ESX servers in Pool1.
As the "assignment" process occurs at the VD level (as opposed to the Pool level) it is not clear to me why the first scenario failed.
Would it would work if there were two VDs each with VMFS store assigned to multiple servers? No clue.....
If someon can clrify my findings I woudl appreciate it,