VOBs for vSAN SSD endurance alarm introduced in vSphere 8.0U2

Products

• VMware vSAN

Issue/Introduction

This article provides documentation on the vSAN SSD endurance alarms introduced in vSphere 8.0U2. These alarms are raised when an NVMe disk in a vSAN ESA cluster approaches the end of its endurance.

Symptoms:

vCenter/ESXi running version 8.0U2 or higher
The following vSphere error and warning events are observed on an ESXi host when an NVMe disk in vSAN ESA cluster is almost running out of its endurance.

Event ID	VOB message	Severity
esx.problem.vsan.health.ssd.endurance.error	One of the disks exceeds 90% of its estimated endurance threshold.	Warning
esx.problem.vsan.health.ssd.endurance.warning	One of the disks exceeds the estimated endurance threshold.	Critical

Environment

VMware vSAN 8.0.x

Cause

In the vSAN ESA cluster, vSphere performs NVMe disk endurance scans and checks every 12 hours. If any NVMe disk reaches or exceeds its endurance threshold, it triggers a Critical event, and if it reaches or exceeds 90% of its endurance threshold, it triggers a Warning event.

Resolution

• If a spare NVMe is available claim a new NVMe disk to the storage pool of the vSAN ESA cluster and evacuate an old one from the storage pool safely.
• If there are no spare NVMes engage the hardware vendor to get a replacement NVMe so the failing NVMe can be replaced.