I have a Hyper-V 20219 FT clusters with FC SAN storage.
I have collected both perfmon counters and also the statistics from the storage and have observed latency issues:
From the storage I observe average 6.9 ms latency for the datastore and from the Hyper-V hosts I observe 100.2 ms latency. A whooping 14x difference
I do understand that there can be a difference in measurement intervals and added latency from the SAN, but this seems too much of difference.
What should I do to the recheck if there is really a latency problem?
What should I also check to find the root cause?