Xenserver, iSCSI and Dell MD3600i

If the iSCSI discovery doesn't work, it's probably a matter of the IQN on the XenSerever host, the MD3600i or both not recognizing each other. Make sure the MD3600i is allowed access from all your IQNs on all your XenServer host using Dell's MDSM utility and then try to redo the iSCSI discovery:

iscsiadm -m discovery -t st -p (MD3600i-primary-controller-IP-address)

iscsiadm -m node --loginall=all

iscsiadm -m session

You should be at least able to ping the primary IP address of the MD3600i from your XenServers if you have network access.

Also note that you'll need to first set up separate iSCSI interfaces on the NICs associated with each new XenServer and assign static IP addresses to those that are unique and on the same subnets as those of your other hosts' iSCSI conenctions.

I hope that helps, --Tobias