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Open-E DSS V6 MPIO with Windows 2008


You must be using DSS V6 up14 or newer.

top ↑1. Hardware configuration

Example configuration of Multipath I/O on Open-E Data Storage Software V6 and Windows 2008

Hardware Requirements:

To run the Multipath I/O on DSS V6 with Windows 2008 server, a minimum of two network cards in both systems are required. In this example the DSS V6 system and Windows 2008 server use three NICs.

Pic 1

top ↑2. Configure the DSS V6

Data Storage Software Data Storage Software (DSS)

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- In order to verify proper NICs settings, go to menu: "STATUS" tab, "network" and Interfaces.

- Two NICs must be used for MPIO, we will use the following IP addresses:,

Pic 3

- Next, go to menu: "CONFIGURATION tab, "volume manager" and Vol. groups.

In Volume manager, create two Block-IO or File-IO iSCSI volumes.

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- In menu: "CONFIGURATION" tab, "iSCSI target manager", Targets, please uncheck the Target Default Name and enter target name: iqn.2009-01:dss233.esx

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- Then the second one: iqn.2009-01:dss233.win2008

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- In menu "CONFIGURATION" tab, "iSCSI target manager", Targets, select first alias: target0 and click on the button.

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- Then select the second alias: target1 and click on the button.

Now the configuration of DSS V6 is finished.

top ↑3. Multipath I/O on DSS V6 with Windows 2008

Windows 2008

Step 1

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Navigate in the Windows 2008 server to the Server Manager, then access the "Features" section and add the "Multipath I/O" feature.

Step 2

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Run MPIO from the Administrative Tools. In the MPIO Properties, go to the "Discover Multi-Paths" tab, check the "Add support for iSCSI devices" box, and click on the "Add" button. The system will reboot as this is required. If the checkbox "Add support for iSCSI devices" cannot be selected, you will have to logon to any iSCSI target using an iSCSI initiator first.

Step 3

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Launch the Microsoft iSCSI Initiator and click on the "Discovery" tab then click "Add Portal...", and enter the IP addresses of the two network interfaces of the DSS V6 server which has one or more iSCSI targets enabled.

Step 4

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Click "Log on..." on the "Targets" tab, and check the "Enable multi-path" box.

Step 5

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Click the "Advanced..." button below on the "General" tab, select the IP address for the first path from the list of the "Target portal" field.

Please note that the values of the "Local adapter" and "Source IP" fields must remain to "Default".

Step 6

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It is needed to log on as many times as there are paths to be used in MPIO (in this example we will log on twice), repeat steps 4. and 5., this time selecting the IP address for the second path in "Target portal". Again, make sure the values of the "Local adapter" and "Source IP" fields remain at "Default".

Step 7

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Now go back in the iSCSI Initiator's main window and go to the "Targets" tab, select the target, and click the "Details" button.

Step 8

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On the "Devices" tab, click the "Advanced" button.

Step 9

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In the "Device Details" window, go to the "MPIO" tab.

Step 10

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Select "Round Robin" in the "Load balance policy" from the pull down menu, confirm by clicking the "OK" button and exit the iSCSI Initiator.

Step 11

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Now go back to the "Server Manager" and navigate to the "Storage -> Disk Management".

Next, right-click on the disk provided by the iSCSI Initiator and select "Properties".

Step 12

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On the "MPIO" tab, select "Round Robin" from the "Load Balance Policy" pull down menu and click the "OK" button to confirm.

Step 13

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Verify the performance with "Iometer" and "Windows Task Manager".

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