We plan on upgrading our existing NetApp 8.1.1 (FAS3070) 7-Mode filer to NetApp 9.0 7-Mode. I know for a fact that there is no direct upgrade to NetApp 9.0 if we are running an earlier version than 8.3.X. First, you need to upgrade to NetApp 8.3.X and then upgrade to NetApp 9.0 or 9.1.
For this reason, we need to first upgrade to 8.3.X and then to 9.0 or 9.1
I have looked for KB articles and on the Internet as well but I could not find sufficient guides that guides you through NetApp 8.1.X 7-Mode upgrade to NetApp 8.3 7-Mode.
Has anyone completed such upgrade in the past? Is there any KB articles or guides available or tools available?
Thank you for your time.