Discrepancy in VM DRS scores Reported by vSphere and VMware Aria Operations

Products

• VMware vCenter Server
• VMware Aria Operations (formerly vRealize Operations) 8.x

Issue/Introduction

^{When reviewing VM DRS scores between vSphere and VMware Aria Operations, different values appear.}

Environment

VMware vCenter Server 
VMware Aria Operations 

Cause

^{VMware Aria Operations considers only two metrics to determine if a VM is happy if ALL the below conditions are true:}

^{- CPU ready percentage is less than 10%, i.e. VM_METRIC_VALUE(“cpu|readyPct”) < 10}

^{- Memory swapped is less than 10000KB, i.e. VM_METRIC_VALUE(“mem|swapped_average”) < 100}

^{In contrast, the VM DRS score in vSphere considers a wider range of factors, resulting in a potentially different score.}

Resolution

^{This is expected behavior and is working as designed.}