Q. On the host I must set the virtual IP for the target-server?

A. Host must connect to the Virtual IP Address that you have setup.

Q. Could I use more Virtual IPs ? For each nic in a subnet (subnet1-LAN, subnet2-for vm)?

A. You can setup more Virtual IP's for each NIC but only per NIC assignment.

Note
Virtual IP needs to be unique within its network environment and the same on both nodes (Primary and Secondary).
Changes to virtual IP settings can be done only when failover configuration is not active.

Note
Virtual IP can be in a different subnetwork than the node IPs, e.g. 192.168.2.1 as opposed to 192.168.1.1 and 192.168.1.2.

Q. With the actual release I could select more than one iscsi-target for autofailover?

A. Most recent release DSS 5.0_49 build 3277 allows for more then one iSCSI - Target Auto Failover.

Q. Must the targetname be exactly the same? at the moment on storage1 it is like
"iqn.2008-04:storage1.target0" and on storage2 like
"iqn.2008-05:storage2.target0"

A. Both the Primary and Secondary must have the same Target Name and Lun# and SCSI ID.