Adding and removing MPIO support
To install Multipath I/O on a computer running Windows Server 2008, complete the following steps.

To install Multipath I/O
1.Open Server Manager.

To open Server Manager, click Start, point to Administrative Tools, and then click Server Manager.

2.In the Features area, click Add Features.

3.On the Select Features page of the Add Features Wizard, select Multipath I/O, and then click Next.

4.On the Confirm Installation Selections page, click Install.

5.When installation has completed, click Close.

Source: http://technet.microsoft.com/en-us/library/cc725907.aspx
Documentation: [wpdm_file id=”18″]