2015-04-05 02:05 AM
I am experiencing some odd transfer speeds on my SAN.
Quick background, I am running a single core nexus 3064 10gb, which connects to 2x cisco UCS hosts running vmware, which connect to 2 isolated 3064 10gb which then connect to a FAS2552 (see attached image)
When i test speeds between devices i get the following results:
vm on ucs1 local disk --> lun ::: this starts around 1.2GBps transfer speeds and drops after seconds and fluctuates between 80 & 250MBps
vm on ucs2 local disk --> lun ::: this starts around 1.2GBps and lasts ~twice as long as ucs1 then fluctuates betweeen 50 & 60MBps
vm on ucs2 lun --> lun attached to ucs1 ::: starts around 300MBps and fluctuates between 50 & 60MBps
vm on ucs2 lun --> lun attached to the same server, but presented as a different drive, starts at 300 and drops to 50-60mbps
simple copy and pasting file into the excat same location eg e:\test.txt to e:\test_copy.txt starts at 200, drops to 100-160mbps.
There is definitely something wrong here i just cant put my finger on it will all the device involved in a flexpod solution.
Guidance would be greatly appreciated.
2015-05-06 10:17 AM
James, have you solved your problem yet? Obvioulsy if you have a serious problem impacting your production enviroment you should contact our support team. Otherwise, I have sent a note around the product team here to see how we can help with related config info.
2015-05-07 11:53 AM
Here's some advice from the team: take a look at this design guide: http://www.netapp.com/us/media/tr-4331.pdf
It's a recent FlexPod implementation guide with what they think are relevant details on configuration, which may help with your issue.