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The figure shows the flow between 6 types of objects: ASM Disk, Quorum Disk Device, Multipath Device, iSCSI Device, iSCSI Target, and Logical Volume.
ASM Disk connects to Quorum Disk Device.
Quorum Disk Device connects to Multipath Device.
Multipath Device connects to 2 iSCSI Devices. It connects to the first iSCSI Device through ib0, and to the second iSCSI Device through ib1.
Both iSCSI Devices connect to iSCSI Target.
iSCSI Target connects to Logical Volume.