topic Re: AFF8020 revert from cDOT9.1 to cDOT 8.3.2P5 in-dedupe can't be turn on in ONTAP Discussions

AFF8020 revert from cDOT9.1 to cDOT 8.3.2P5 in-dedupe can't be turn on

TonyWu — Wed, 04 Jun 2025 18:25:27 GMT

Hi All,

Recently, I revert the AFF8020 from cDOT 9.1 to cDOT 8.3.2P5, but there is some strange condition afterward.

The System Manager and Command line can't enable inline dedupe

The error as below:

DATA ONTAP APF failed: Inline Deduplication requires an effective cluster version of DATA ONTAP 8.3.2 or later

Please help to share your experience to see how it solves.

Many thanks.

Tony Wu

Sahana — Wed, 02 Nov 2016 03:54:35 GMT

Hi,

Please check the output for version (for cluster version) and version -node * (for node versions) commands.

Ensure that the OS version matches across all nodes and the cluster.

TonyWu — Wed, 02 Nov 2016 04:20:40 GMT

Hi Sahana,

It still has the same issue even the version are same

The result as below:

AFAPoc::> version -node *

AFAPoc-01 :
NetApp Release 8.3.2P5: Tue Aug 23 12:36:56 UTC 2016

AFAPoc-02 :
NetApp Release 8.3.2P5: Tue Aug 23 12:36:56 UTC 2016

2 entries were displayed.

Sebastian_Goetze — Wed, 02 Nov 2016 09:30:51 GMT

Did you follow the revert-procedure and disable all the new 9.0 and 9.1 functionality, e.g. compaction and so on?

Maybe somewhere there's still fragments of the newer configs left and it confuses ONTAP...