I have made some progress. On the second ESX 5 server I went into the storage config and selected "rescan all". After a few seconds, the datastore created on the first ESX 5 machine appeard. I then added a second hard disk to the second cluster node and I was able to select the quorum file from the datastore. I specified SCSI1:0 as on the first node however it did not present me with the option of physical or virtual compatibility. All I could select was Mode - Independant/Persistent. Upon completion, I was presented with the error:
Incompatible device backing specified for device '0'
Any ideas?
Thanks
GM