Virtual Machine Restarted by vSphere HA Due to ESXi Host DIMM Hardware Failure

Products

• VMware vSphere ESXi

Issue/Introduction

Virtual machines experience an unexpected restart initiated by vSphere High Availability (HA). Associated recovery events are recorded within VMware Log Insight or vCenter Server, specifically logging VmRestartedByHAEvent.

Environment

 7.0 U3s

Cause

The underlying ESXi host experienced a hardware fault caused by a defective memory module (DIMM). This hardware failure triggered a host crash or isolation event. Consequently, the vSphere HA cluster initiated an automated restart of the affected virtual machines on available healthy hosts within the cluster to mitigate downtime. 

Resolution

The virtual machine restart is the expected automated recovery behavior mandated by the vSphere HA configuration. No guest operating system remediation is necessary for the virtual machines