The Nutanix CVM is what runs the Nutanix software and serves all of the I/O operations to the hypervisor and all VMs running on that host hence it is of crucial importance to configure CMVs with the right amount of resources.
The RAM and CPU allocation of the CVM both depend on the model of the nodes, the storage capacity of the cluster and the features used in the cluster.
Each environment is unique in a way and each and every single one is dynamic by nature. Features are turned on and off, nodes upgrade, storage added.
The following guide helps us to understand the memory requirement of the CVM for different models and features. The next time you are planning to add a feature or upgrade hardware in the cluster look at the minimum requirements to make sure that the cluster performance is not affected. After all there are very few things more satisfying than a smooth maintenance window.
- Acropolis Advance Administration Guide: CVM Memory Requirement
- Prism Web Console Guide v5.16: Increasing Controller VM Memory Size
- .NEXT Increasing CVM memory
To know more about managing your Acropolis Environment, you can give the following document a coffee read