If you are running Nutanix Acropolis on VMware vSphere 6.x you will see alarms for high memory usage, which is by design from VMware. Here I show a quick video on why it occurs and how to clear the false positive alarms.
Related VMware KB: https://kb.vmware.com/s/article/2149787
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This video is my own, is unofficial and does not represent anyone but myself.