FCoE Cookbook for HP Virtual Connect Version 4.20 Firmware Enhancements May 2014
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Installation of the Device Specific Module (DSM)
MPIO requires the installation of device specific modules (DSM) in order to provide support for using multiple data paths
to a storage device. These modules are a server-side plug-in to the Microsoft MPIO framework.
A native Microsoft DSM provided by Microsoft comes by default with Microsoft MPIO software but storage providers can
develop their own DSM that contain the hardware specific information needed to optimize the connectivity with their
storage arrays.
Vendor specific DSM usually provides optimal performance, lower latency, more advanced path decisions and quicker
path failover times while the Microsoft DSM offers more basic functions.
Installation of the Microsoft DSM
With Windows 2003 Server, the Microsoft DSM comes with the Microsoft iSCSI Initiator.
With Windows 2008 and 2012 Server, the Microsoft DSM is an optional component that comes with MPIO. When MPIO is
installed, the Microsoft device-specific module (DSM) is also installed. For more information, see:
- Microsoft Multipath I/O (MPIO) User’s Guide for Windows Server 2012 at http://www.microsoft.com/en-
us/download/details.aspx?id=30450
- Installing and Configuring MPIO for Windows 2008 Server at http://www.microsoft.com/mpio
Configuring Microsoft MPIO for HP 3PAR Storage:
To install and configure the native Microsoft MPIO for HP 3PAR StoreServ Storage, follow these steps:
If you have not already done so, install any required support drivers for your FlexFabric adapter.
In the MPIO Devices tab, click the Add button; the Add MPIO Support popup appears.
In the Device Hardware ID: text box, enter 3PARdataVV, and click OK.
Reboot as directed.
Note: You can also use MPIO-cli to add 3PARdataVV. The command is: "mpclaim -r -I -d "3PARdataVV"
For more information, see HP 3PAR Windows Server 2012 and Windows Server 2008 Implementation Guide
http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c03290621-14.pdf