Clustered Data ONTAP 8
This article describes the procedure to unjoin a node in Data ONTAP 8.1.x Cluster-Mode
Compared to the procedure for Data ONTAP 8.0.x, Data ONTAP 8.1.x has an updated unjoin procedure. For information on the Data ONTAP 8.0.x procedure, see article: Data ONTAP 8: How to unjoin a node from a cluster
Cluster unjoin is an operation that an administrator can perform to remove the nodes from a cluster. All the data on these nodes will either have to be moved or removed, before the unjoin can be completed. To move or temporarily disable the nodes, you do not have to unjoin them from the cluster. The operation described below will permanently remove the unjoined nodes from the cluster. It will only be possible to join these nodes back to the same cluster after their configuration has been cleared out completely. This includes LIFS, volumes, and other objects.
If you are not sure if you need to perform a cluster unjoin, contact NetApp Support with information on the task you want to complete.
The improvements in Data ONTAP 8.1.x center around additional checks for nodes that own objects. If a node owns an object (volume or LIF), the unjoin will be prevented until the object is either deleted or moved from the node that is being unjoined.
Additionally, an added operation to clear the unjoined node of all configurations is appended to the final step of the unjoin operation. This happens on the node that was successfully unjoined from the cluster. Connect to the console to verify that the unjoined node is rebooted to the correct menu.