MPIO between Storage Server and clients in a pure Hyper-V environment

1) open the iSCSI initiator
2) Add the two iSCSI portals (DNS, or IP if there are no name resolution in the private iSCSI network)
3) You will see the available targets in the Targets tab
4) Click connect
5) Check Enable multipath and add the specific target-initiator pair in one of the iSCSI networks ONLY
6) We will add the remaining iSCSI path once MPIO is configured

1) Install the MPIO feature
2) Click MPIO in Administration Tools
3) In the Discover multi-path tab, click add support for iSCSI devices (you must connect to the iSCSI device before otherwise this will be grayed)
4) You will be asked to restart Windows. You will see a new device hardware ID (MSFT2005iSCSIBusType_0x9) in the MPIO Devices tab.

1) Once restarted open the iSCSI initiator again
2) Select the target in the Targets tab, click properties
3) Click Add session and add the target-initiator pair in the remaining iSCSI network
4) Click Devices, you will see only one device (not two) if MPIO is configured properly
5) Click MPIO, you will see the load balancing policy and the two connections to the iSCSI device
6) In Disk Management (or Storage Manager for SANs (SMfS), if Storage Server hardware providers are installed), configure the newly added disks as appropriate

To verify:

1) You will see network traffic in both iSCSI adapters when formatting and copying files
2) Copy a large file. Disconnect one of the iSCSI connections and see the traffic failover to another path. Repeat the other way.
3) In the Device by connection view of Device Manager, you will see “MSFT Virtual HD Multi-Path Disk Device” under the Microsoft Multi-Path Bus Driver
4) In MPIO the Configuration Shapshot tab, generate a configuration log file.

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