Click the Exhibit button.
You are attempting to add a new ONTAP 9.7 node to your ONTAP 9.8 NetApp cluster. After attempting to add the node, it fails as shown in the exhibit.
What are two nondisruptive ways to add the new node to your ONTAP cluster? (Choose two.)
To resolve the issue of node addition failure due to mixed versions in an ONTAP cluster, two nondisruptive methods are appropriate. First, upgrading the new node from ONTAP 9.7 to ONTAP 9.8 ensures that all nodes in the cluster run the same software version, thus avoiding mixed-version conflicts. Second, adding the node using the -allow-mixed-version-join parameter permits the inclusion of a node with a different software version temporarily. However, this is typically a temporary solution and requires that the versions be synchronized later. These methods maintain operational functionality while addressing the version discrepancy.
The following are the most common scenarios in which an ONTAP cluster will be in a mixed version state: ONTAP software upgrades in large clusters ONTAP software upgrades required when you plan to add new nodes to a cluster
https://docs.netapp.com/us-en/ontap/upgrade/concept_mixed_version_requirements.html#requirements-for-mixed-version-ontap-clusters A mixed version ONTAP cluster consists of nodes running two different major ONTAP releases, such as ONTAP 9.8 and 9.12.1, or ONTAP 9.9.1 and 9.13.1. Mixed version ONTAP clusters are only supported by NetApp in specific scenarios. The two most common scenarios are: ONTAP software upgrades in large clusters ONTAP software upgrades required when you plan to add new controllers to a cluster
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/Troubleshooting_mixed_version_message_that_appears_during_upgrade https://docs.netapp.com/us-en/ontap/upgrade/concept_mixed_version_requirements.html