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How to get iSCSI multipath work on Windows 10 , should I do any adjustment in linux server side?

in flag

I have 8x18TB Raid10 mdadm volume on Ubuntu server. When I connect from Windows iSCSI speeds 220MB/sec read 375MB/sec write. I guess it is a iSCSI protocol bottleneck could not improve it. It leaves me multipath.

I have 2 nics on both server and client. I tried many things but could not figure out how to use Multipath or multiple sessions (in windows interface). Tried to connect sessions as

192.168.122.100 --> 192.168.122.110
192.168.123.100 --> 192.168.123.110

I see both portals in portals and create favorite as MPIO but when I use MCS it says it is already connected. Also tried to

192.168.122.100 --> 192.168.122.110
               |--> 192.168.122.111

Could not get it work. What adjustment should I do server side. I am clueless at the moment. By the way windows is windows10 PRO 20H2 so no restrictions on it I guess.

note: We try to make it work fluently with avid media composer. Since it asks for disks. If I cannot get the performance I need from ISCSI, I plan to switch to nbd ? Any good alternatives to iSCSI or other suggestions which works over 10Gbe ethernets and switch ?

Edit: I stumbled upon CNA cards RDMA ISER solution gonna try it ... Suggestions are still welcome.

djdomi avatar
za flag
Please update the last part of your question, it's not good formatted and asked. Since you get over 200mb/s I believe that the server is already using 10gbit?
Stuka avatar
gb flag
From what I've found it could be a bug of Windows 10. https://github.com/MicrosoftDocs/azure-docs/issues/9796 It should work and according to forums it will until your reboot the PC. You will need to enable it again after reboot. Might be helpful as well: https://social.technet.microsoft.com/Forums/ie/en-US/1b5ec2f8-8ba8-4320-8cac-89fc623f83b9/windows-10-mpio?forum=win10itprosetup
Gediz GÜRSU avatar
in flag
I have edited the question and I am using X520T2 Intel cards both on server and client.
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