The server will boot using a single iSCSI host bus adapter (iSCSI HBA). If more than one iSCSI HBA is present in the remote xSeries system or BladeCenter blade, then you must identify which iSCSI HBA is used to boot the server. The boot device information can be accessed using the BIOS utilities (System BIOS or Adapter BIOS - CTRL-Q).
How many iSCSI HBAs are in your remote system?