2011-01-11 08:04 AM
what network switches would you use when building storage network for netapp filers (with 10Gbit NICs + 1Gbit nics) with multiple server racks (each rack with its own storage switch (1Gbit)?
I will have to implement such design soon, and I have option to use currently used setup (C6503+2960G) or something else (maybe more optimal for performance)?
Thank you in advance for your answers.
2011-01-11 09:11 AM
Take a look at Cisco's Nexus line. These are datacenter switches for pretty much exactly what you are doing (core uplinks for storage/server)
The 6500 is a modular core and or distribution (or collapsed core) layer switch designed to handle L3 routing, etc. (because routing is generally done at distribution layer). You probably have a true core layer, requiring more advanced L2.
2011-01-12 06:25 AM
thank you very much for your answer, but I have a question - do these 2 switch types (6500 vs Nexus) differ in network latency/throughput? I mean, does it provide better performance to use Nexus instead of 6500 switches?
Or maybe when we use 10Gbit NICs from filers to C6503 as single VIF - that is a problem? is there any performance difference between single VIF and multi-mode VIF? (i know that more paths = better throughput, but we barely do more than 1.5Gbit from 10gbit pipe)
and I am trying to understand best network design for my new implementation (based on fas3160 heads)...
2011-01-12 10:12 PM
Nexus should have better performance.
I do not have hands on experience with Nexus, just marketing and talking to peers. I think you should call your Cisco/NetApp reps and discuss this. They will surely have a lot more insight.
Regarding your VIF question single or multimode isn't going to matter given what you said about 1.5Gb. From a design perspective I would think there is always an argument to run in multimode. Why spend the dollars on interfaces and not use them.
2011-01-13 11:50 PM
Hi, and thank you very much for your reply. I really appreciate it.
Tell me one more thing - do such network switches require any "special" tweaking (apart of Jumbo Frames)?
And i also read that Netapp recommends with Cisco switches to use VSS features, what do these features provide for storage environment?
thanks in advance for your answer...