Assuming that ballooning is possible, under which three circumstances might the VMkernel use a swap file for a running virtual machine? Select three.
A.
The Mem CtlMaxPercent value is between 10 and 25 percent
B.
Memory cannot be reclaimed quickly enough
C.
The virtual machine is starting up
D.
VMware Tools is not installed
E.
50 percent of the configured memory has already been balooned
Explanation:
C: Wrong: When the machine is starting up the Ballooning driver hasnt loaded yet.
D: Wrong: When VMware tools is not installed Ballooning isnt possible
The correct answer is B, C and D
Explanation
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Using Swap Files
You can specify the location of your swap file, reserve swap space when memory is overcommitted, and delete
a swap file.
ESXi hosts use swapping to forcibly reclaim memory from a virtual machine when the vmmemctl driver is not
available or is not responsive.
n It was never installed.
n It is explicitly disabled.
n It is not running (for example, while the guest operating system is booting).
n It is temporarily unable to reclaim memory quickly enough to satisfy current system demands.
n It is functioning properly, but maximum balloon size is reached.
Standard demand-paging techniques swap pages back in when the virtual machine needs them.
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