Critical Alert: vSAN Capacity Alarm and High-Consumption Host Failure Risk
Article ID: 396898
Updated On:
Products
Issue/Introduction
VCenter UI shows the alert "Critical Alert: vSAN Capacity Alarm and High-Consumption Host Failure Risk"
In the VCenter vmware-vsan-health-summary-result.log diskspace health is in yellow status
Test diskspace health : yellow ClusterLevel: Utilization Health WarningThreshold(Gb) ErrorThreshold(Gb) (72.04%(45083.37GbOf62575.35Gb), Yellow, 43106.51, 55621.58)
Environment
VMware vSAN 8.0.x
VMware vSAN 7.0.x
Cause
The vSAN Datastore utilization has reached the threshold in the scenario of 1 host failure.
If vSAN Datastore utilization will go above 80% it shows a warning and utilization above 90% shows an error
For example :
vSAN Datastore is 72% full and it will go over 86% when most utilized host fails.
CLUSTER 5271be40-e1d2-06ff-####-############ (44.02 TiB/61.11 TiB)(72.03%)├─HOST:UAGENT 5f577c65-4f8a-9e78-####-############ (8.01 TiB/12.22 TiB)(65.55%) (###Host06)│ └─DISKGROUP 5245770e-d882-a888-####-############ (8.01 TiB/12.22 TiB)(65.55%)├─HOST:UAGENT 5d78127e-92c5-f740-####-############ (8.71 TiB/12.22 TiB)(71.23%) (####HOST04)│ └─DISKGROUP 5272dab1-97b3-e57b-####-############ (8.71 TiB/12.22 TiB)(71.23%)
........output truncated.........
Resolution
Add additional resources to the cluster to facilitate a successful rebuild after a failure.
check to see if any of the components such as Disks drives are in a failed state and work with the hardware vendor to get it replaced/repaired.
For more information see vSAN Health Service - Limits Health – After one additional host failure
Additional Information
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