Migrate a Hybrid vSAN Cluster to an All-Flash vSAN Cluster

For one of my projects we have to perform a lifecycle on the hosts within a Management Cluster. To make this work we have to migrate a Hybrid vSAN Cluster to an All-Flash vSAN Cluster. The current hosts in the Management Cluster have magnetic spinning disks and vSAN was therefore running in a vSAN Hybrid configuration. The new hosts are equipped with nice NVMe drives and vSAN should therefore be running in an All-Flash (AF) configuration to have all the nice features available like Erasure Coding, Deduplication and Compression.

 
Migrate a Hybrid vSAN Cluster to an All-Flash vSAN Cluster
 

I had never done this before and the vSAN documentation (link) describes only replacing the disks of the hosts, and does not describe the procedure for replacing the Hybrid vSAN hosts by All-Flash vSAN hosts.

Well this is a good opportunity to get my hands dirty again with some labbing. To the Lab!

Lab Setup

  • Software used
    • vCenter 7.0 u1
    • vSphere 7.0 u1
    • vSAN 7.0 u1
  • Hosts – Hybrid – 1x 8GB Cache SSD 1x 64GB Capacity HDD
    • dcesxi71.vmbaggum.local
    • dcesxi72.vmbaggum.local
    • dcesxi73.vmbaggum.local
  • Hosts – All-Flash – 1x 8GB Cache SSD 1x 64GB Capacity SSD
    • dcesxi74.vmbaggum.local
    • dcesxi75.vmbaggum.local
    • dcesxi76.vmbaggum.local

Let’s get started

I’ve prepared vSphere Cluster “CL-03” with the 3 Hybrid hosts and made sure the vSphere and vSAN Cluster status is healthy.

Migrate a Hybrid vSAN Cluster to an All-Flash vSAN Cluster 1
 
vSAN is enabled, and as you can see everything is pretty default.
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