Monday, 13 June 2011

2 Node Hyper-V Cluster Update: We have MPIO Based Storage

Well, it looks as though the problems in the first run through were indeed driver related as well as process (which step goes before which) related:


We enabled the MPIO feature on the Hyper-V nodes after installing the updated drivers for both the Adaptec (which comes up unsigned despite Adaptec’s indicating they are) and the Intel SAS module.

  • Driver install command line:
    • pnputil –i –a Adaptec.inf
    • pnputil –i –a IntelSAS.inf
  • MPIO feature enable (TechNet):
    • Dism /online /enable-feature:MultipathIo
      • Note that this command is case sensitive.
    • mpclaim –n –i –a
      • Grab all of those disks
    • mpclaim –l –m 4
      • Set load balancing mode to “Lease Queue Length”
    • mpclaim –s –d
      • Shows the current load balancing mode:

New to Windows Server 2008 R2 SP1 Core and thus Hyper-V Server 2008 R2 SP1 is the MPIO Control Panel:

  • MPIOCPL.exe

Once we go through and configure the MPIO based storage there are a few more steps to take to configure and test the networking and then we will stand the cluster up.

Philip Elder
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book

*Our original iMac was stolen (previous blog post). We now have a new MacBook Pro courtesy of Vlad Mazek, owner of OWN.

Windows Live Writer

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