Hi Everyone,
I am hoping someone can shed some light on this issue I have been scratching my head about all day.
I am in the process of setting up a two node MSCS cluster across two hosts with fibre attached RDM LUNs. I have followed the most recent guide for setting up a MSCS cluster and attaching the raw disks but have I have got stuck when adding one of the disks to the second node.
I have added an RDM to node 1 correctly, physical mapping and physical SCSI controller on a new SCSI ID 1:0
I then go to the second node and try to add an existing disk and browse to the same VMDK file I just created on node 1 but I am unable to see it.
Even stranger I have a total of 5 disks to add to this cluster, the first time I added all 5 disks at once to node 1 and then tried to add them to node 2 using add existing disk. 4 of the disks listed but this one that I am having problems with was missing. This is what started off this whole thing this morning. The only difference between this problem disk and the other 4 is that this disk is 1.2TB and the rest are below the 1TB mark.
So since then I have been trying to add just this one disk using the guide and searching forums and posts with no luck.
I finally thought that being Vsphere 5 I might be able to add the RDM twice as in add in new disk, raw device mapped disk and then select the LUN. Every bit of literature told me that after it has been added once I should not see it on node 2, but low and behold I can see the LUN and I have added it to each node separately, there is a a vmdk file in each of the guest machines folder on the datastore and I can see the disk in Storage manage in Windows in each guest?
I am sure this is not right but I am very confused at this point.
Any help would be greatly appreciated.
Thanks
Simon