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Traffic going out Gb instead of 10Gb NICs
Posted: Wed Feb 13, 2013 7:59 pm
by mooseracing
As I am playing catch up and cleaning things back up, I was running IOmeter and notice I am only getting Gb speeds. I look and the traffic is going out the Gb NIC which has an address of 172.27.1.x to our Starwind target. In iscsicpl, I have the targets defined as 192.168.11.x, which my 192.168. addresses are assigned to the 10Gb interfaces, which are all plugged into eachother and assigned static IP's.
Why would traffic be going out the Gb? I can ping the targets 10Gb IP's from eachother.
Re: Traffic going out Gb instead of 10Gb NICs
Posted: Fri Feb 15, 2013 11:26 am
by Anatoly (staff)
I need to know the following information from you in order to provide a solution:
1. Operating system on servers participating in iSCSI SAN and client server OS
2. RAID array model, RAID level and stripe size used, caching mode of the array used to store HA images, Windows volume allocation unit size
3. NIC models, driver versions (driver manufacturer/release date) and NIC advanced settings (Jumbo Frames, iSCSI offload etc.)
4. Network scheme.
Also, there is a document for pre-production SAN benchmarking:
http://www.starwindsoftware.com/images/ ... _guide.pdf
And a list of advanced settings which should be implemented in order to gain higher performance in iSCSI environments:
http://www.starwindsoftware.com/forums/ ... t2293.html
http://www.starwindsoftware.com/forums/ ... t2296.html
Please provide me with the requested information and I will be able to further assist you in the troubleshooting
Re: Traffic going out Gb instead of 10Gb NICs
Posted: Mon Feb 18, 2013 1:31 pm
by mooseracing
I don't have reasoning but after the update to 6. I am not seeing this. My speed isn't where I want it to be but I still am getting things setup on a server I upgraded to 2012.
Right now our 2 HA nodes are '08 R2 and the two clients that access them are 08r2 and 2012. As I mentioned in the other thread I have more memory and hard drives on the way to give this a boost. We have been using this setup for a few years and I have never been happy with the performance, mainly because of budget issues.
Have you guys had any issues with 2012 or is there different tweaks required?
Re: Traffic going out Gb instead of 10Gb NICs
Posted: Thu Feb 21, 2013 12:19 pm
by Anatoly (staff)
No, the tweaks are still the same so as with the WS2008R2. But to be honest I`d recommend you to benchmark the system without an advanced configuring - I know a lot of situation when SAN performs perfectly it.