We are in the process of upgrading our Vmware environment next week from 5.1 to 5.5U2. Due to the way things were left by the previous sys admin I changed out all the network cards but have a question about the ISCSI adapters. Currently, all the ESXi hosts only have 1GB connectivity but we have plans to upgrade some of our infrastructure later this year to support 10GB connections.
Each host will have 2 quad port i350 cards in it for network traffic/Vmotion. My question is, the ESXi Servers have Qlogic QLE4062C ISCSI HBA's and these were purchased at least 4 years ago. Would it be worth it to replace these Qlogic cards with Intel X540T2's? Obviously when we are able to support 10GB we could instantly take advantage of that, but would we see better ISCSI performance than the QLogic at 1GB (Performance enhancements, newer technology)?
its difficult to response your question without having no idea about your vpshere environment. but yes you should have a performance benefit.
you will be able to handle 10gbit/s and the intel chipset will have probably more features and more computing power for tcp/ip and iscsi offload...