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MPIO in Server 2012 R2. Second connection keeps dropping.

I have several R720 servers with dual port Broadcom BCM57810 10Gb NICS. They all have Windows Server 2012 R2 Datacenter installed with the Hyper-V role. I am trying to make iSCSI connections to a Dell/Equallogic PS6110. I have HIT 7.1 installed on the servers. I can make a single connection to the storage ok, but when I make the second connection (MPIO) , it drops shortly thereafter. I believe the issue is on the server side because we have other Dell servers that were configured by Dell and have MPIO (2 connections) working fine. Any advice on how to get the second connection to stay up? I want to cluster these nodes, but the cluster validation test keeps failing on MPIO, stating there's only a single connection to the storage.

Gajendra Rathod

Please check the configuration of MPIO.

wudevr

ASKER

Thanks Gajendra for trying to help me.
Dell's HIT software installs it's own MPIO config software which is different from configuring MPIO in Windows.

ASKER CERTIFIED SOLUTION

Philip Elder

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wudevr

ASKER

Thanks for the reply Philip. Yes, I've tried contacting Dell. They haven't been able to resolve the issue, yet. Still trying.
To answer your questions:
Yes, 2 switches with independent data paths
Yes, jumbo frame settings consistent across Nic, Switch, Storage
Yes, HIT is configured with Least Queue Depth
No, connection drops on different controllers. not sure regarding active/active or LUN... I will investigate

Philip Elder

Have you looked through the working configuration to figure out where the differences may be?

Philip Elder

How did things get resolved?