To determine if the Multipath I/O feature has been installed, login to your core server and run oclist.exe:
If you already know the name of the feature or role your looking for, you can save yourself some time by piping the output of the oclist.exe command to the find.exe command. The /I parameter makes the search case insensitive.
To install the MultipathI/O feature, run “start/w ocsetup.exe MultipathIo”. The name of the feature is case sensitive. Running Start/W in front of the “OCSetup.exe” command will allow the installation to complete before you’re returned to a command prompt.
More details about iscsicpl can be found in my previous blog on “iSCSI Initiator Configuration on Windows 2008 R2 Server Core”
The load balancing policy can also be changed with the mpclaim.exe command. The default policy is “Round Robin”.
April 16, 2011
If you’re using an EqualLogic SAN, I recommend installing the EqualLogic Host Integration Tool (HIT) Kit before doing any of the Multipath I/O configuration. See my “MultiPath I/O on Server Core with the EqualLogic HIT Kit” blog for more information.