You should use the Upgrade Advisor tool (if it is available in your environment) to ensure that you have met the requirements for upgrading to the current release and to generate an upgrade plan.
To use the Upgrade Advisor tool, your system must meet the following requirements:
Upgrade Advisor is an online tool, available on the NetApp Support Site, that simplifies the process of planning Data ONTAP upgrades. When you submit your system identification and target release to Upgrade Advisor, the tool compares AutoSupport data about your system to known requirements and limitations of the target release. Upgrade Advisor then generates an upgrade plan (and optionally a back-out plan) with recommended preparation and execution procedures.
For more information about Upgrade Advisor, see the Upgrade Advisor Help screens.