Memory ESX balloon - help!

Hello

We have a cluster VMware ESX 3.5 U2 4 running node (32 GB RAM each blad hp Server)).

We suffer memory ballooning on VMs that appear on the performance of ESX tab. On the cluster, we have 91 'memory resrvation used' and 26 Go 'without reserve the memory"

Also on the summary of each ESX box tab shows there is a lot of cpu and memory of reserve (40% of free memory)

I checked each individaul VM and ensured that in the 'resources' tab memory limit is set to 'unlimited', however I know that there is no reason the VMS should ball?

Here is the production of virtual machines, I have a support call with VMware, but are much longer towards the front. Any help greatly appreciated

I deliver some VMware courses and resources management is the most difficult to teach, but also the most difficult to learn. Here is my proposal on why you have hot air balloon and permutation.

Please keep in mind that the summary is for the cluster. Each virtual machine runs explicitly on a single host.

I think you initially said that 91 GB are reserved (ie. it is guaranteed at the DIMM space for the virtual machine with shelveset, and it won't apply to other virtual machines), leaving 26 GB without reservation. And now you have suggested some virtual machines have no reserve. The virtual machine with no reservation can be used only as 26 GB without reservation. And if a large part of this unqualified 26 GB is on the host only 'good' then the other grains hosts lack probably without reserve RAM and have ball (and later swap) to meet the demands of their guest VM memory.

Tags: VMware

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