Bringing NetApp Storage Systems Out of a Cluster

Adding a NetApp FAS storage system to a cluster is very simple:
The ports of the cluster interconnect to the switch are connected and the command is executed:

cluster setup 

How to get a node out of a cluster?

Output Nodes from Cluster

It may be necessary to remove a node from a cluster in a wide variety of cases. An illustration of this can be if you have a cluster consisting for example of the FAS8020 and FAS2240 / 255x systems and you want to convert the second one into a shelf in order to connect it to the 8020.

For this you need :

• Delete or migrate volyums from units on disconnected nodes, including MDV system volyums
• Delete or migrate LIFs from nodes that will be disabled. SAN LIFs can be not migrated (after all, you most likely set up multipassing) or can be migrated in offline mode
• Change home ports on LIFs if they point to disconnecting node ports
• Remove disconnect node ports from manually created failover-groups
• Remove ports of disconnected nodes from manually created broadcast-domains
• Simply remove the ports of the disconnected nodes from the portsets or create new portsets, replace the old ones in the new groups with new ones, then delete the old ones
• Turn off High Availability for the group in which the node to be disconnected is located, be sure to remove both nodes of the HA system (in turn)
• If system units for audit logging are located on the aggregates on the disconnected nodes, turn off CIFS audit
• If necessary, from the advanced mode, move the epsilon to the node that will not be deleted.

 cluster1::> vserver audit delete -vserver vsm01 cluster1::> storage failover modify -node clA-01 -enabled false cluster1::> storage failover modify -node clA-02 -enabled false cluster1::*> set -privilege advanced cluster1::*> cluster show cluster1::*> cluster modify -node clA-02 -epsilon false cluster1::*> cluster modify -node clA-04 -epsilon true cluster1::*> cluster unjoin -node clA-02 

After which you will see the following message:

 cluster1::*> cluster unjoin -node clA-02 Warning: This command will unjoin node "clA-02" from the cluster. You must unjoin the failover partner as well. After the node is successfully unjoined, erase its configuration and initialize all disks by using the "Clean configuration and initialize all disks (4)" option from the boot menu. Do you want to continue? {y|n}: y [Job 32] Cleaning cluster database[Job 32] Job succeeded: Cluster unjoin succeeded 

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