Hey All,
I need to come up with some general guidelines for VMware Cluster resource commitment levels. I have a team dedicated to VM builds that meets once a week. I want to provide them a report they can use to determine cluster commitment levels are nearing the need for growth. I'm thinking to define specific CPU and RAM commitment maximums by cluster. When these are reached we would do no further builds to the cluster until it's grown or resources freed up.
What commitment ratios are you all using in general? vCPU to pCPU ratio are you using (4:1, 1:1)? What about RAM?
I'm also considering break up clusters by vCPU count of the VMs and have strict ratios for each; =<4 vCPU on a 4:1 cluster, 5-8 vCPU on a 2:1 and >8 on a 1:1. We’d have to define RAM levels as well.
Thoughts on this? How have some of you approached this?