Erasure coding vSAN storage policy creation fails on stretched cluster

Products

• VMware vSAN

Issue/Introduction

The ability to create a new vSAN storage policy with FTT "1 failure - RAID-5 (Erasure Coding) is prohibited with the message "RAID-5/6 (Erasure Coding) - Capacity requires an All Flash Configuration"

Environment

ESXi7.x

vSAN Cluster is stretched

All licensing requirements are met

Cause

Storage Tier set to 'No-Preference' in Storage Rule Tab.

This is the default setting but can be changed by selecting the Storage Rules Tab and selecting the 'All Flash' option.

Resolution

Change Storage Tier to 'All Flash' and continue with the wizard. This will allow the Policy Creation to complete successfully.