Reference Dell R810 with 'too' 10gig NICs, which could cause Group?

We run only integrated esxi U1 4.1 Dell R810 with 128 GB of ram and two CPUs from Intel 7560 8 - core server.  They have 4 to 10 GB (2 dual-port maps) network cards and 4 on-board network to 1 GB cards.  10GB network adapters are all Intel X 520-2 (two ports) using the IGB driver.

They were CMTF ' ing randomly over the past weeks (but not more than once a week and only 3 of 18 servers with this same configuration have been CMTF).  So we contacted Dell.  After diligence analysis of their side, checking the logs, management versions of the BIOS, firmware, and other settings, etc. they are pointing the finger back at VMware (KB 1020808 in particular).

Dell claims their hardware config itself is absolutely perfect after first suspecting a power problem (from 4 NIC 10gig) which they have thrown from.  So we are at a loss, short of removing the port double 10 GB network adapters and replacing them with single port 10 GB NIC (per article) since we currently only 2 of the 4 in use; I wanted just more for the future.

Based on the feedback/logic of Dell, these same PSODs could occur on ANY platform hardware provider server running 4.1 U1, if these servers were equipped with 4 10gig NIC and 4 1gig NIC.

We are all Jumbo-image not (for now) / 1500 MTU.  That said, the article specifies "recommended" maximum:

For MTU 1500 configurations:

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The closest is our generations/configs come in (which is 4 x 10G ports + port 4 x 1 G).  Let's remove 2 10G ports by removing the two dual port 10G cards in there now, and replace single port 10G cards and see if the PSODs continue.  If they do, Dell is for a world of pain.  If they do not, then well, I guess that ESXi 4.1 U1 can only 'manage' 2x10G ports with up to 8 x 1 G ports, as they the article inferred.

Any feedback is welcome!  Someone out there running ESXi builds (any manufacturer of server) with FOUR cards of 10 GB/ports in them?  Thank you.

Your problem is 4 to 10 GB network adapters.

Replace them with a single HBA port.

If you * only * had four NICs 10GB then it would work, but nothing, including the NICs 1 GB will not work.

I saw a customer with this problem before and vmware support claimed with 4 10 GB NICS, adding an extra, including even just

an additional 1 GB nic will cause problems.

Tags: VMware

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