It depends mostly on the type of IO. File IO takes lots of processor, but block IO tends to bottleneck on the disks. If you have high latency, I'd start off by looking at the processor. If that correlates with the latency, that's your bottleneck. If it doesn't, open a case with Netapp, capture a performance dump during high latency, and have them tell you.
On Wed, Feb 11, 2015 at 11:54 AM, Edward Rolison ed.rolison@gmail.com wrote:
Does anyone have a very rough rule of thumb as to IOPs you might expect out of a controller?
I've got a FAS6280 that's starting to 'be a bit sluggish'. I'm inclined to shrug and say 'yes, it's doing 20K IOPs'.
I know there's very much an 'it depends' in there - but 'very rough' is good enough for me here. (Disk wise - it's not particularly high on disk utilisation, nor is the network bandwidth particularly full).
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