Windows 2012 MPIO

We have 2 HP DL 380 Gen 8 servers  with windows 2012 installed on  each of them.
Each server has four NIC's . We are setting up a HyperV cluster. Out of the 4 NIC's, 2 NICs would be teamed for VM traffic. one NIC and ISCSI traffic and one NIC for heartbeat.
We are using HP P2000 as shared storage . On HP P2000 4 NIC are plugged to the iSCSI vlan.
So my question is do I need to install MPIO's on the windows 2012 servers. I thinking as we are using just one NIC on each server for iSCSI traffic we don't need to.
LVL 23
Malli BoppeAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
If you are only using a single NIC for iSCSI traffic, then there is no requirement for the MPIO module.

But I would recommend, you use at least two nics, install MPIO, and you will have resilience, and increased throughput to your iSCSI SAN.

Also ensure you enable Jumbo Frames on your network interfaces, network switches, and SAN.
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
I concur with hanccocka and would go further and suggest your install another 4 GB ethernet card for following reasons:

1. Create a management network where Hyper-V hosts run and this should not be the same VLAN as your application servers (use a dedicated NIC)
2. Additional NICs for iSCSI
3.  Use a dedicated NIC/network for live-migration
4. If backing up servers to a remote backup server then you should consider using a a dedicated network
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
if you are going to cluster, the minimum required is 8 physical network interfaces

2 - VM Network Traffic
2 - iSCSI (MPIO)
2 - Live Migration Team
2 - Cluster HeartBeat Team
Active Protection takes the fight to cryptojacking

While there were several headline-grabbing ransomware attacks during in 2017, another big threat started appearing at the same time that didn’t get the same coverage – illicit cryptomining.

Malli BoppeAuthor Commented:
Thanks Guys

@ hanccocka

Can you provide any MS documentation about the minimum cluster requirements showing that we need 8 NICs
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
http://blogs.technet.com/b/keithmayer/archive/2012/12/12/step-by-step-building-a-free-hyper-v-server-2012-cluster-part-1-of-2.aspx#.UiiTVj8TlpN

if this is a production system, you will really want to team for resilience, to reduce single points of failure - this is recommended.
Malli BoppeAuthor Commented:
Thanks Hanccocka

Just want to confirm that we don't need to use MPIO when using single niC on the HYperV server even when we have 4 NIcs from the SAN on the iSCSI network
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
No requirement for MPIO on a single NIC.

MPIO is for more than one nic.
Malli BoppeAuthor Commented:
So on the SAN out of the 4 iscsi NIC if one of them fails will the hosts still be able to access the data
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
In you want to use 4 nics on the SAN, from a single interface on the server, install MPIO.

If a nic fails on your server, host will not be able to access the data.
Malli BoppeAuthor Commented:
So you still need MPIO on the server even when using a single NIC
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
to establish multiple paths to the LUNs on the iSCSI SAN yes, because you've got single IP Address to 4 IP Addresses on the SAN.


4 potential paths for iSCSI traffic.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Server 2012

From novice to tech pro — start learning today.