What’s New In MPIO In Windows Server 2012?

This is taken from Microsoft Multipath I/O (MPIO) Users Guide for Windows Server 2012.

The following changes to MPIO are available in Windows Server 2012:

  • PowerShell management and configuration: Utilizing the MPIO module in PowerShell, MPIO can be configured using PowerShell as an alternative to MPCLAIM.exe. See the section Installing and Managing MPIO using PowerShell: section of this document.
  • Heterogeneous HBA usage with MPIO: Heterogeneous, (That is different) HBA types can now be used together with non-boot Virtual Disks only. In prior releases of Windows Server, it was mandatory to use HBA’s of the same model.
  • Support for MPIO with multiport-SAS enclosures: The use of MPIO with Data volumes on a multiport-SAS enclosure is now supported.

Heterogeneous support for HBAs for data drives is cool. Now your network path fault tolerance can include different hardware models, chipsets, and drivers.

One thought on “What’s New In MPIO In Windows Server 2012?”

  1. Thanks for your high quality posts!

    One Question about disk MPIO in 2012R2:

    Two nodes, iSCSI Failvoer-Cluster, and one shared JBOD. Which MPIO Policy do i have to assign to each of the disks? FailOver or Round-Robin?

    Cannot find any Infos about that …



Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.