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Users are complaining that a Windows application server virtual machine configured with 1GB RAM is not performing satisfactorily. The virtual machine is in a fully automated DRS cluster. An administrator opens the Performance tab for the guest virtual machine and adds the counters for Memory Ballooned and Memory Swapped in MB. The performance chart displays a value of 0 for Memory Ballooned and 240 for Memory Swapped.
Which action should be taken?
A. Install VMware Tools into the virtual machine.
B. Adjust Mem.CtlMaxPercent to read 75.
C. Migrate the virtual machine to another host.
D. Add memory to the virtual machine.
Correct Answer: A
Explanation/Reference:
The VM first tries to Balloon and then tries compression and then uses Swapping. The fact that it is swapping and not doing any ballooning, means its not working and thus the driver needs to be installed.
VmTools would install the balloon driver into the guest. Instead of the host swapping out part of the guest memory, it would allow the balloon driver to do it’s job and let the guest O/S choose the least important pages in memory to swap out therefore freeing up memory for the host, while allowing important pages necessary for performance to stay in memory.