Subscribed.
We run 3240's in HA 7-mode on 8.1.2 and we have been battling issues similar to the OP and going back and forth with netapp for the last 3 months on resolution. We have moved hotspots that netapp identified from 24/7 perfstat logs to SAS off SATA and have basically removed virtually all write heavy IO applications from the SATA aggregate but we will still see the :s cp type and all of the sudden experience latency spikes across all protocols. I think we have gone through 3 upgrades based on 'bugs' netapp claimed to have found/fixed. We are definitely in a better place, but the latency issue is still too common to feel comfortable about. Definitely would liek to be added to an escalation and would be happy to provide logs/stats/etc that may help get this issue noticed by netapp.
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