Pre-revert tasks required for your ONTAP version

05/12/2025 Contributors

Depending upon your ONTAP version, you might need to perform additional preparatory tasks before you begin the revert process.

If you are reverting from …	Do the following before you start the revert process…
Any ONTAP 9 version	Terminate SMB sessions that are not continuously available. Review reversion requirements for SnapMirror and SnapVault relationships. Verify deduplicated volumes have enough free space. Prepare snapshots. Set the autocommit period for SnapLock volumes to hours. If you have a Metrocluster configuration, disable automatic unplanned switchover.
ONTAP 9.17.1	If you have enabled the ONTAP ARP feature for SAN, disable it.
ONTAP 9.16.1	If you have TLS configured for NVMe/TCP connections, disable the TLS configuration on the NVME hosts. If you have extended qtree performance monitoring enabled, disable it. If you are using CORS to access your ONTAP s3 buckets, remove the CORS configuration.
ONTAP 9.14.1	If you have enabled trunking for client connections, disable trunking on any NFSv4.1 servers.
ONTAP 9.12.1	If you have configured S3 client access for NAS data, remove the S3 NAS bucket configuration. If you are running the NVMe protocol and have configured in-band authentication, disable in-band authentication. If you have a Metrocluster configuration, disable IPsec.
ONTAP 9.11.1	If you have configured Autonomous Ransomware Protection (ARP), check the ARP licensing.
ONTAP 9.6	If you have SnapMirror synchronous relationships, prepare the relationships for revert.

If you are reverting from …

Do the following before you start the revert process…

Any ONTAP 9 version

ONTAP 9.17.1

ONTAP 9.16.1

If you have TLS configured for NVMe/TCP connections, disable the TLS configuration on the NVME hosts.
If you have extended qtree performance monitoring enabled, disable it.
If you are using CORS to access your ONTAP s3 buckets, remove the CORS configuration.

ONTAP 9.14.1

If you have enabled trunking for client connections, disable trunking on any NFSv4.1 servers.

ONTAP 9.12.1

If you have configured S3 client access for NAS data, remove the S3 NAS bucket configuration.
If you are running the NVMe protocol and have configured in-band authentication, disable in-band authentication.
If you have a Metrocluster configuration, disable IPsec.

ONTAP 9.11.1

If you have configured Autonomous Ransomware Protection (ARP), check the ARP licensing.

ONTAP 9.6

If you have SnapMirror synchronous relationships, prepare the relationships for revert.

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