Wondering anyone could shed some light on the following. We have a new setup we are putting in top replace and older one. It consists of:
2x ESX V6 servers and vCenter (2x 1GB nic for VM traffic vSwitch0, 2x10GB Nics for iSCSI vSwitch1)
Dell EQL (2x 10GB NICs)
Physical Veeam Server (2NICs teamed for Production Network, 2 Nics not teamed with MPIO in iSCSI)
Production network and iSCSI network completely separate switches
With MPIO disbale I get a backup speed using Direct SAN of 400k (yes 400k)
Wiht MPIO enable I get 4MB/s
If I change to NBD I get 70MB/s
Something isn't right. The EQL has 3 interfaces, 2x10GB and 1 100MB nic for management. It's almost like it;s trying to use the 100MB nic but it shouldn't be, the iSCSI initiator on the Veeam server uses the Group IP in the iSCSI network.
I am sure it;s something simple but I have been looking at too long now to see it. IOPS testing from a VM on the ESX cluster show very good performance so it;s just Veeam -> EQL that is slow.
Any advice welcome.