Dear Adam, Depending on what exactly you want to do with your data and the precision you want to gather, Munin can be a great helping tool. It will give you the opportunity to gather data about your resources on the hypervisors and their usage. Furthermore, it comes with Libvirt plugins that allow you to check the resources usages of your VMs on said hypervisor. The URL is: http://munin-monitoring.org/ I hope it helps. Cheers, On 09/30/2014 11:03 AM, Adam King wrote: -- Pierre Schweitzer <pierre(a)reactos.org&gt; System & Network Administrator Senior Kernel Developer ReactOS Deutschland e.V. That looks ideal. Many thanks for such a prompt response. Adam King