vCenter has a warning message，”The summary of performance statistics from "past month" to "past year" does not appear in the database”。
After inquiring with the manufacturer，ResultThis is just a false warning，Can be ignored，VMware KB Write about：
This is a known issue in vCenter Server Appliance 5.x This warning is a false alarm and can be safely ignored if there are no actual problems with the performance graphs.
But if it's the sixth edition，VMware hasAnother KB Explain how to deal with。
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