SCSI Controller is VMware certified error when remediating vSAN ESA nodes

Products

• VMware vSAN

Issue/Introduction

vSAN ESA unable to be configured due to HCL warning about controller

Environment

vSAN ESA 8.0+

Cause

Per vSAN Design Guide on page 17 

Choosing a Storage I/O Controller

vSAN does not support NVMe drives being placed behind RAID controllers or Tri-Mode controllers. Beyond being unsupported, this has been shown to cause performance problems, especially in configurations that limit NVMe drives to a single PCI-Express lane. While some ReadyNodes have used PCI-Express switches or expansion devices, these are commonly not needed on the most modern of CPU architectures today.

 

 

Resolution

Disable the controller via BIOS and ensure ESA supported NVMe drives are connected directly to CPU via PCIe