This section describes how to upgrade vSAN from U3 to EP15.

The disk format upgrade is optional. If you use a previous disk format version, your vSAN cluster continues to run smoothly. For best results, upgrade the objects to use the latest on-disk format. The latest on-disk format provides the complete feature set of vSAN. For more information, see About the Virtual SAN Disk Format.


  1. Upgrading vSAN Disk Format Using vSphere Client.
  2. Update the vSAN HCL DB. For instructions, see KB 54945.