[VMC] vSAN Health Alarms present in VMC VC UI

Products

• VMware Cloud on AWS

Issue/Introduction

Description on how to handle the above two alarms

Symptoms:
Various vSAN Health Alarms present in Cloud vCenter UI:
 
vSAN health alarm 'vSAN disk balance'
vSAN health alarm 'After 1 additional host failure'

Cause

These transient vSAN Health Alarms generally appear when the cluster is utilized above 60%.

Resolution

The alerts can be safely ignored.
Since VMC on AWS is a managed offering, these alarms are transient in nature and do not pose an issue.
 

• VMC SDDCs will automatically rebalance the vSAN disks once a capacity disk reaches 80% usage. Rebalance thresholds cannot be configured on VMC
• VMC SDDCs also are dynamic in nature and will scale-out or in as required, meaning the 'After 1 additional host failure` alert is non-actionable

Additional Information

https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-monitoring.doc/GUID-2EC7054E-FBCC-4314-A457-3DCAEDBCBD32.html
https://kb.vmware.com/s/article/2108743
https://kb.vmware.com/s/article/2144278

Impact/Risks:
Zero impact or risk to on-going operations within VMC SDDC.