How to upgrade OS ONTAP version from 9.3 to 9.4p1

[adnan_scl]

How to upgrade OS ONTAP version from 9.3 to 9.4p1 if any best practice documents step by step then share with us?

[rranga]

You can use Automated NDU for the same. Please refer to Upgrade Express Guide for details.

[GidonMarcus]

Please generate an upgrade advisor plan for your cluster. it will give you detailed instructions:

https://mysupport.netapp.com/myautosupport/dist/index.html

You can also use the upgrade guide in the specific version download page.

Starting in Ontap 9.4. the update should be easier without an external HTTP/TFTP server...

Good luck

[wareer]

You can directly upgrade, you need to download a good mirror version package, prepare an http software, if there is snapmirror, you need to stop the relationship, and you need to do a lot of checks to verify that there is no problem with the cluster, below is the official upgrade steps link, I hope to help you:https://docs.netapp.com/zh-cn/ontap/upgrade/concept_upgrade_methods.html