Understanding license types and entitlement risk helps you manage the risk associated with the licenses in a cluster.
A package can have one or more of the following types of license installed in the cluster:
A node-locked license is issued for a node with a specific system serial number (also known as a controller serial number). This license is valid only for the node that has the matching serial number.
Installing a node-locked license entitles a node to the licensed functionality. For the cluster to use licensed functionality, at least one node must be licensed for the functionality. It might be out of compliance to use licensed functionality on a node that does not have an entitlement for the functionality.
Data ONTAP 8.2 and later releases treat a license installed prior to Data ONTAP 8.2 as a standard license. Therefore, in Data ONTAP 8.2 and later releases, all nodes in the cluster automatically have the standard license for the package that the previously licensed functionality is part of.
A master or site license is not tied to a specific system serial number. When you install a site license, all nodes in the cluster are entitled to the licensed functionality.
If your cluster has a master license and you remove a node from the cluster, the node does not carry the site license with it, and it is no longer entitled to the licensed functionality. If you add a node to a cluster that has a master license, the node is automatically entitled to the functionality granted by the site license.
A demo or temporary license expires after a certain period of time. It enables you to try certain software functionality without purchasing an entitlement. It is a cluster-wide license, and it is not tied to a specific serial number of a node.
If your cluster has a temporary license for a package and you remove a node from the cluster, the node does not carry the evaluation license with it.
It is a risk that arises because of the non-uniform installation of the node-locked license. If the node-locked license is installed on all the nodes, there is no entitlement risk.
Entitlement risk can be a high, medium, or no risk, or unknown depending on certain conditions:
If a master license is installed on a cluster, entitlement risk is never high.