I have a simple VMWare ESX Server 3 farm (plus Virtual Infrastructure/HA) that is running off of a single iSCSI SAN. We have a NetGear ReadyNAS 2100 set up as an iSCSI target with two volumes (mirroring the iSCSI SAN). Its job is to run as a backup should the primary fail and also as primary storage for some really large, non critical VMs.
I have successfully added it to my storage cluster except that both of the targets are somehow stuck in single host mode so only one of the hosts in the farm is attached to it (this differs from our primary storage where all hosts are connected to both targets).
How have I managed to mis-configure my vmware storage? I need both hosts to talk to this backup iSCSI to achieve my recovery goals.