ESXi Host Disconnecting From Datastore

Products

• VMware vSphere ESXi

Issue/Introduction

Once a week at the same time, an ESXi host gets disconnected from their external storage device.

Environment

VMware ESXi 8.0.3 build-24022510

VMware ESXi 8.0 Update 3

 Dell PowerVault

Cause

Storage hardware vendor found that the storage power supplies were connected to the same UPS system and it was failing to provide enough power to support all the I/O.  

Resolution

Contact hardware vendor for assistance replacing failing UPS system.  Have multiple power supplies connected to separate, healthy UPS systems when possible.