Yes, I have set up 4 targets so far. On CentOS 5x, setting node.startup = manual in /etc/iscsi/iscsid.conf and using [ iscsiadm -m node -T iqn.2011-03.example.org.istgt:mytarget -p x.x.x.x --op update -n node.startup -v automatic ], to make just the target node startup automatic, works.