Enable MPIO on Windows Server

To enable Windows Server to recognize multiple paths on a redundant iSCSI or FC fabric, you must install the optional Microsoft multipath I/O (MPIO) feature.

Add the MPIO Windows Feature

To enable the MPIO feature in Windows Server Manager, run the following command to install this feature from the Windows Server CLI:

Enable-WindowsOptionalFeature -Online -FeatureName MultiPathIO

Note: To activate MPIO, you must reboot the server after you install the feature.

Install the HPE Nimble Storage Windows Toolkit

The HPE Nimble Storage Windows Toolkit (NWT) includes the HPE Nimble Storage Device Specific Module (DSM) for MPIO as well as additional features such as the HPE Nimble Storage VSS integration and the HPE Nimble Storage Setup Manager. HPE highly recommends that you install the NWT. The toolkit also verifies that all necessary hotfixes and prerequisites, such as Microsoft .NET Framework 4.5.2, are in place before the installation. If the installation fails because of missing requirements, visit the Microsoft Download Center to download and apply these hotfixes.

Detailed instructions for installing the NWT are available in the NWT documentation. Download the NWT from the HPE Nimble Storage Windows Toolkit (NWT) page on HPE InfoSight.

Install the NWT and click Next or Accept until the installer has completed. Alternatively, to run NWT as an unattended installation, copy the offline installer to the local node and run the following command:

<installe_file_name> /s /v"/l*v c:\nwt_install.log EULAACCEPTED=Yes /qn"