Erasure coding (Raid - 5/6) storage policy creation fails on vSAN cluster.
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Erasure coding (Raid - 5/6) storage policy creation fails on vSAN cluster.

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Article ID: 371806

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Updated On:

Products

VMware vSAN

Issue/Introduction

When attempting to create a vSAN Storage Policy with Erasure Coding (RAID-5/6) enabled, the operation fails or the policy cannot be created. This occurs when the Storage Tier is incorrectly set to No Preference in the Storage Rule tab, which is incompatible with Erasure Coding requirements.

Environment

VMware vSAN (All versions)

Cause

vSAN Erasure Coding (RAID-5/6) strictly requires an All-Flash configuration; setting the Storage Tier to 'No-Preference' prevents the policy from validating this requirement.

 

Resolution

 

  1. Log in to the vSphere Client.

  2. Navigate to Policies and Profiles > VM Storage Policies.

  3. Edit the affected vSAN Storage Policy.

  4. Navigate to the vSAN tab and select Storage rules.

  5. Locate the Storage Tier setting.

  6. Change the value from No Preference to All-Flash.

  7. Ensure Failure tolerance method is set to RAID-5/6 (Erasure Coding) - Capacity.

  8. Click Next and Finish to save the changes.

 

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