Multipath Device Discovery
Applies To: Windows Server 2008 R2
From the Discover Multi-Paths tab, you can add devices that are available on your network. You can also determine if multiple instances of a device are represented by the same storage unit. For such devices, their hardware IDs are listed.
If you are using Microsoft Multipath I/O (MPIO) with iSCSI Initiator, click Add support for iSCSI devices. (This may require the computer to be rebooted.)
Adding support for iSCSI allows the Microsoft Device Specific Module (MSDSM) to claim all iSCSI devices for MPIO, which first requires a connection to an iSCSI Target.