You can enable the Windows Server 2008 R2 Multipath I/O (MPIO) feature from the command line using this DISM command:
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dism /online /enable-feature:MultipathIo
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To disable this feature use:
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dism /online /disable-feature:MultipathIo
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To show the currently enabled/installed features use this DISM command:
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dism /online /get-features
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