I have another HA Pair connected to the XP Port, a V3170 model though, so I'm sharing the ports with two more filers. There are no other filers or other hosts connected however.
I'm getting reports of various system performing a lot worse than previously, Oracle batch jobs taking a lot longer. Sluggish systems, and in some cases SnapDrive is timing out creating disks in previously created qtrees.
A support case has been logged, a perfstat has been run. The Earth has rotated. Nothing new here. NetApp support has not seen anything out of the ordinary. We recently updated the filers to Ontap 8.1.1 from 8.0.2, and we saw a sharp increase in CPU activity, this was the cause for raising the support case. Support came back and explained that the CPU usage was due to background dedup processes, and this was normal.
So here I am, still trying to find what's going on. I have access to detailed XP performance data. I can see a high microprocessor usage on the host ports, but the latency per port is reasonable. Browsing through a wall of numbers, no latency over 10 ms so I should be good.
Other people are looking at individual volumes on the filer side, and it seems we have some heavy hitting Oracle apps. Could very well be that the filer is overwhelmed with IO bursts, but the investigation continues.