Same array same time frame same metrics. The top chart is reporting 1956 IOPS and the bottom is reporting 7766 IOPS. These are off of the storage summary page. Is this a bug or am I missing something?
Seems like the Performance Comparison chart has a bug. The hour sample rate is definitely off by a lot. When switching to a sample rate of 30 or less minutes the chart more closely aligns with the Performance Summary chart.
FWIW I had a similar problem with a Hitachi HDS system. I opened a ticket and after sending them some logs they were able to provide a patch.