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Hi All
I am in the process of learning ESXi 5.5 on a host at home and have some questions about how memory is managed by ESXi. I have read quite a bit online but I am still a bit confused!
My test host has 32GB. I have created a number of VMs and have allocated them 50GB of memory in total. When I click my vCenter server in the web client and then click the summary tab it says:
Free memory 1GB
When I then click the monitor tab it says:
Granted: 50GB
Consumed: 29GB
Active: 24GB
Shared common: 1.5GB
Swap and balloon: 1GB
I know I have (intentionally) overcommitted the memory but why is vCenter alerting me all the time that the host memory usage is high and why is the server swapping if only 24GB of memory is active? From what I understand, active memory is what is ACTUALLY used so in this case I am using 24GB out of the total of 32GB so I should be able to use 8GB more of memory without swapping?
Also, how much swapping of memory is acceptable? All my storage is on SSDs (including the VM swap files).
Am I misunderstanding something here? :smileyconfused: I thought I would only get memory alerts/alarms when the active memory approached 32GB...