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Correctly setting upWin 2008 R2 ISCSI Initiator for Multi Pathing to connect to our ISCSI SAN

Posted on 2011-10-10
Medium Priority
Last Modified: 2012-05-12

We have a HP P4000 ISCSI SAN, i have a windows 2008R2 server that i have presented the LUN to and its all showing up fine as useable storage in Windows Disk management,

I want to confirm that i have it setup correctly for Multi Pathing, basically my Windows box has 2 NIC's for ISCSI traffic, When i add the new volume in the ISCSI target on the Logon i make sure i tick the box that says automatically reconnect and  Enable Multi-Path.

Do i need to do anything else, is there somewherei can check to make sure that both paths are being used, will it list 2 different connects to the storage for each lun thats presented?

Question by:ncomper
  • 2

Accepted Solution

rattlerant earned 2000 total points
ID: 36953113
On the target tab, click on the connected target to highlight - click 'Properties'. On the 'Session' tab, ensure you see more than one session. Highlight a session ID in the 'Identifier' area. Click Devices and click MPIO - check your load balancing properties (set this according to SAN vendors specs ... Least Que Depth is default). Make sure that both (at least 2) connections show as connected and ideally, both are active. You can click 'Details' to verify that both iSCSI IP/ports are being connected to.

Also ... sometimes vendors, like HP/Dell have their own Device Specific Module (DSM) plugin to the iSCSI Initiator to help with Multipath Configuration ... check the HP site for one of these.



Author Comment

ID: 36954647
Thanks, I have attached some screenshots, When i look at the devices they appear to have lots of sessions (Pic4) however my concern is that on Pic3 i only have a signle connection from one of my ISCSI NIC cards, if i try to add another i get an error saying to many connections, maybe im just mis understanding how this works , does that sound correct.



Targets Tab Properties of a Target Sessions Tab Session Connections Properties of a Target Devices Tab Device Details MPIO Tab Favorite Targets Tab

Author Closing Comment

ID: 37106592

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