Try to go to the Details button for the Targets: iqn.2007-08:dssmm.target0 and logoff.
You may want to try with the connected one as well then refresh then logon for the dss target that stated "Connected".

Then go to Disk Manager > Action > Rescan Disk to see if this comes on line.

If you create another target from dss (CD-ROM) are you able to access the target (not being replicated), but for testing?