With the release of vSAN 6.6.1 or vSphere 6.5 U1 we have put together a new upgrade document to assist you with upgrading to vSAN 6.6.1 from previous releases. The guide provides prescriptive guidance and clarity on vSAN upgrade steps. it also includes step by step guide for new vSAN and vSphere Update Manager integrations.
Main highlights from the guide are
- Supported Upgrade Paths.
- vSAN OnDisk Format considerations.
- vSAN Networking considerations during upgrade and transitioning from multicast to unicast communications.
- Troubleshooting and worked examples.
This guide is available at https://storagehub.vmware.com/#!/vmware-vsan/vsan-6-6-1-upgrade-considerations