How is memory allocated in ESXi server?

Posted by Samselvaprabu on Server Fault See other posts from Server Fault or by Samselvaprabu
Published on 2012-08-23T11:29:52Z Indexed on 2012/08/29 9:40 UTC
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virtualization

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vmware-esxi

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virtual-machines

We have an ESXi 4.1 server with 48 GB RAM.

For each VM, we are allocating 4GB of memory. Since the server will have 13 virtual machines, my manager thinks this is wrong.

I am going to explain to them that ESXi will actually manage memory itself, but they asked me how much memory I allocated for the ESXi server itself.

I did not allocate any (I have not even heard of an option for allocating memory for the ESXi server itself).

How is memory allocated for ESXi server? How does it over-allocate/distribute RAM among virtual machines without issue?

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