8x00 family of Disk Arrays 4.00.00 installation and reference guide (AA-RW7SN-TE, October 2009)

C Managing MPIO devices using

Microsoft-provided interfaces on Windows

Server 2008 and Windows Server 2008 R2

This appendix describes how to manage MPIO devices using the Microsoft-provided interfaces on

Windows Server 2008 and Windows Server 2008 R2. Beginning with Microsoft Windows Server

2008, Multipath I/O (earlier called MPIO framework) is provided as an operating system feature.

Along with the feature, a few interfaces are provided to enable you to manage the MPIO framework

and devices. Microsoft also supplies an inbox Microsoft DSM (MS DSM), which provides multipath

support for SCSI-3 compliant disk devices.

This appendix addresses the following topic:

• Multipath I/O feature

• Managing multipath support

• Managing multipath disk devices

Multipath I/O feature

Multipath I/O feature enables the operating system to manage the disk devices that support

multipathing. You must enable this feature before managing devices that support multipath. Installing

the HP MPIO EVA DSM automatically enables the Multipath I/O feature.

Alternatively, you can enable this feature manually as follows:

1. Go to Server Manager and select Features > Add Features. The Add Features Wizard page

displays.

2. Select Multipath I/O. The MPIO framework and MS DSM are installed, and the MPIO applet is

added to the Control Panel.

Managing multipath support

Microsoft provides a Control Panel applet that enables you to manage multipath support for disk

devices. This interface allows users to enable or disable multipath support for the selected devices,

allows users to install vendor-specific DSM, or both.

To use the applet, go to Control Panel and select MPIO. The MPIO Properties page displays.

The MPIO Properties page includes the following tabs:

• MPIO-ed Devices

• Discover Multi-paths

• DSM Install

HP MPIO Full Featured DSM for EVA4x00/6x00/8x00 family of Disk Arrays 4.00.00 installation

and reference guide 51