This article describes upgrade path for Acronis Storage 2.x (AS) / Acronis Software-Defined Infrastructure (SDI) / Acronis Cyber Infrastructure (ACI) Clusters to the latest version.
More information regarding the exact software versions may be found in Acronis Cyber Infrastructure Release Notes.
Upgrade of ACI (AS, SDI) is a sequential multi-step process, intermediate steps cannot be skipped (e.g. direct upgrade from 3.0 to 4.5 is not possible) and only the next update step is expected to be available in WebCP > Settings > Update, additional information on updates installing for the latest ACI version may be found in the Administrator Guide.
In case if any issue will appear during update/upgrade process, contact Acronis support for assistance.