I recently migrated all of my VMware LUNs from an IBM XIV to an 8020 and now I am getting 'Virtual machine total disk latency' alerts from VMware. I did not get these when running on XIV.
I am monitoring my 8020 with the OnCommand Plugin for Microsoft in SCOM and I'm not getting any latency alerts from SCOM.
'statistics start -sample-id lun_stats -object lun' is showing LUN latency in microseconds, so there doesn't appear to actually be a performance issue with the 8020.
Is there some tuning I need to do in VMware (I have VSC installed), or are these VMware alerts just unreliable? If so, any thoughts on why they were occuring with the XIV?
could be this?
otherwise, maybe openning a case is a better solution?
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