Difference between Memory and Memory Limit Resource

[tropix]

Hi all.

I was thinking about set up amount of memory to my virtual machines and limit them in Limit Resource.

For example, give 256M RAM to a VM is equal to give 512 and limit in 256M?

In the second case, my guest OS see all 512M, right? If my guest need more memory, because it think have 512, ESX will use swap?

Thanks.

Eduardo

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[weinstein5]

limit is a cap on consumption of memory - so to answer your questions yes both will limt the vms access to 256 MB and and it is my understanding that no the vmkernel will not swap put memory to get tot he available memory of 512

[tropix]

Hi.

Thanks about your answer.

So, can I consider to set up like 4G/8G to all my virtual machines and limit all to just they realy need, like 512M/1G? This way, if a virtual machine need more RAM, I dont need to shutdown to increase memory, right?

Regards,

Eduardo

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[weinstein5 · Accepted solution]

Exactly!