Correct amount of memory display on host configuration but not on Total Avalable ressource for VMs

[chebre]

Dear ESXi community !

I'm running ESXi 5.0.0, 623860 (Cisco specific) on my server. It has 6GB installed.

In the host Configuration-->Memory display i see 6141,9 Mo but in the Ressource Allocation tab ESXi displays only 3985 Mo Total capacity.

Any idea Where this problem comes from ?

I've searched through the threads but didn't find an answer to my question even though these two seem quite close to my problem :

http://communities.vmware.com/message/2159320#2159320

http://communities.vmware.com/message/2128900#2128900

[JCMorrissey]

Hi,

Yes 6gb looks a little low - 2gb is the recommended bare minimum for esxi 5 - see http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.install.doc_50%2FGUID-DEB808...

suspect with the 2gb the hypervisor has taken whatever is left is what you see there in the resource allocation tab

Many tx

[chebre]

@ JCMorrissey

Thanks for your quick answer. Isn't the memory used by the hypervisor displayed in the Configuration-->Memory tab ?

There I can see that the memory taken by the system is only about 400 Mo and that the memory left for the VM is the difference 6Gb - 400 Mo= 5600Mo... even though the resource allocation tab shows only 3985 Mo...

[JCMorrissey]

Hey,

Indeed - i see the same but just wondering on your main host dashboard under resources what you see for memory? i've enclosed a screenshot

from a host i have running with no (promise!) virtual machines running, notice its 3gb  ? can be a variety of factors but in a non-clustered environment still should be 2gb

[chebre]

Hey

I attached the folloging screenshots of my ESX with no VM installed (FYI language is french) :

- HostDashboard-Ressource --> 939 Mo Used / Capacity 6141 Mo

- HostConfig-Memory     --> Total 6141 Mo / System 27 Mo / VM 6114 Mo

- RessourceAllocation     --> Total 3989 Mo / Total 3989 Mo

Surprising... Still doesn't make sense, some of the memory "disappear" somewhere...

I've tried on that very same server to install ESXi 4.1 or ESXi 5 and in the two cases I get the same problem....