Windows 10 MPIO, Here's how to do it.

So recently I swapped my Linux Plex server with a Windows box.  Actually truth be told I re-purposed a Barracuda 410 Web Filter appliance.. It was powered by Pentium G850 which I upgraded to an I7-3770K..  Oh and before I forget to mention I did get the front NIC ports working. Ask me how :)

Anyway the point of this post is to explain MPOI in Win10. So I'm running Win 10 LTSB on this box because I don;t want some errant update screwing up my media experience. Plus my back end storage is a Drobo 810i. So I've got both Drobo nics setup for iSCSI and I wanted the front nic ports of the now dubbed 'CudaPlex' (patent pending), to be dedicated to iSCSI.

Now WIndows 10, while similar to Server 2012/2016 does not support multi-path out of the box.  But after much time spent on Google I finally found a working solution. And to help save it for posterity I'm posting it here.

Originally found on the Technet forums it worked beautifully for me.

Here's the post:

Hi

I managed to "transplant" MPIO and msdsm driver from Windows 2019 to Windows 10 Pro (1703, 1709, 1803 and 1809) with success.
The method needs to import some registry, copy necessary files into original place and manually check update for drivers.
There was slow and old Infortrend Disk Array in my test (3x Gig connected to switch with 10Gig to PC), so PC initiated 3 paths from 1x10Gig to 3x1Gig
https://i.imgur.com/tqaJq0U.png
https://i.imgur.com/k2riJi7.png
https://i.imgur.com/3Gx4OyF.png

But in fast PC + fast array (4x1Gig Array + 4x1Gig PC) it performs like this
https://i.imgur.com/B94ZumQ.png

How-to and script+files+registry are located inside zip file (link below).
https://ufile.io/u2003
Beware!!! Backup first and this "mod" is for test/educational purpose only. You do it at your own risk and take the responsibility upon yourself and you are not to blame me.

Regards
Chris

• Edited by cra3y Saturday, January 19, 2019 10:50 AM

Friday, January 18, 2019 5:42 PM

I ran a system restore backup first just to be safe but this worked perfectly for me. Both PCIe nics are dedicate to iSCSI and I gained the performance boost only attributed to MPIO after following this guys process.

Enjoy.

In case Chris's link expires here's mine: https://ufile.io/9vp34h23