VM Memory maximum

[Gandalf_wise]

Hi

In the config_maximum.pdf , Size of RAM per virtual machine = 65532MB (64GB ‐ 4MB).

What is the "4MB" ?

Thanx

[LarsLiljeroth]

Hi

I don't see the numbers you are seeing. Are we looking at the same -- > http://www.vmware.com/pdf/vi3_35/esx_3/r35/vi3_35_25_config_max.pdf


Best regards

Lars Liljeroth

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[dkfbp]

Hi,

4MB is the least amount of memory you can assign to a server.

Best regards

Frank Brix Pedersen

[Gandalf_wise]

Yes in this pdf :

On the first page, at the "Virtual Machines Maximum" items

[dkfbp · Accepted solution]

Hi,

4MB is the least amount of memory you can assign to a server.

Best regards

Frank Brix Pedersen

[LarsLiljeroth]

ahh... my glasses ... Now i found it.

Yes that is the minimum you can assign. Try and put the memory slider to the minimum value on a Vm.


Best regards

Lars Liljeroth

[Gandalf_wise]

Thank you Guys !

[BUGCHK]

> 65532MB (64GB ‐ 4MB).

The line is talking about max. memory for a VM, so I read it that you cannot assign a full 64GB (=65536MB) of memory - it is 4 MB less.

[felmasper]

I don't think this was answered.

As BUGCHK, I think the maximum is a formula: =(64GB-4MB) =65532MB and not a range.

So, the question is: why is 4MB subtracted?

[Gandalf_wise]

I agree with you. My question was why is 4 MB substracted?

[sonyn]

It's not a substraction but a notation reminding you that any memory size up to 65532MB that you allocate to the vm must be a multiple of 4MB!:x

[BUGCHK]

.

[BUGCHK]

> My question was why is 4 MB substracted?

As said, memory is allocated in multiple of 4 MegaBytes. For 65536

MegaBytes, another Bit would be required to describe that number in

binary.

65532(10) = 0FFFC(16) = 1111.1111.1111.1110(2)

65536(10) = 10000(16) = 1.0000.0000.0000.0000(2)

Now if that bit is spend, you can describe up to 131068(10) = 0x1FFFC(16) = 1.1111.1111.1111.1110(2) MegaBytes

If you want to describe 131072 MegaBytes you do need another bit - and on and on -

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oops