Recently I received a question about the Performance tab within vCenter which intrested me. Looking at the available Chart Options we can see that there are two distinctive performance streams: Real-time data Historical data
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vCenter Performance Tab – Real-time vs. Historical Data
Posted by Kenneth van Ditmarsch on February 7, 2011
https://virtualkenneth.com/2011/02/07/vcenter-performance-tab-real-time-vs-historical-data/