6027-2376 [E] Node class `nodeclass` cannot be `action`. It is marked for use by Transparent Cloud Tiering. To remove this node class, first disable all the nodes with mmchnode --cloud-gateway-disable.

Explanation
Cannot delete a node class that has cloud gateway
enabled.
User response
Disable the nodes first with mmchnode --cloud-gateway-disable.

6027-2376 [E] Node class nodeclass cannot be action. It is marked for use by Transparent Cloud Tiering. To remove this node class, first disable all the nodes with mmchnode --cloud-gateway-disable.