ONTAP downgrade from 9.11.1P3 to 9.9.1P10

[Sasnet]

Hello Team,

There is FAS2750 Storage System with ONTAP v9.11.1P3. Need to downgrade to 9.9.1P10.

Revert path is:

1) To downgrade to ONTAP v 9.10.1P12;

2) Downgrade to ONTAP v 9.9.1P10.

Storage is not in production, there is no cluster between nodes, no licenses added.

So I want to donwgrade via CLI. Is it possible to do this on each node separately, before cluster setup?

Or there are some special steps?

Thank you!

[Ontapforrum · Accepted solution]

Revert:
https://kb.netapp.com/onprem/ontap/hardware/How_to_downgrade_the_nodes_to_join_the_existing_cluster

https://docs.netapp.com/us-en/ontap-sm-classic/expansion/task_upgrading_or_downgrading_nodes.html

Simply fresh install (Since the cluster is not yet formed):
https://kb.netapp.com/onprem/ontap/os/How_to_repurpose_an_HA_Pair_with_ONTAP_9

Check this thread:
https://community.netapp.com/t5/ONTAP-Discussions/How-to-revert-to-ontap-lower-ver-before-cluster-setup/m-p/435888

[Sasnet]

Ontapforrum

Wow! Thank you very much!