The CLUSCTL_CLUSTER_SET_PRIVATE_PROPERTIES cluster control code stores the unknown properties, as specified in section, for the designated cluster as part of the cluster's non-volatile cluster state.

The unknown properties of a cluster are the part of the cluster's non-volatile configuration data that is maintained in the cluster state and whose schema is defined by an entity external to the cluster.

The client MUST provide one or more unknown property names and their associated values, by using the format as specified in section, in the buffer that is designated by lpInBuffer.

After successful completion of the method, the server SHOULD NOT write any data to the buffer that is designated by lpOutBuffer.

The server MUST accept a CLUSCTL_CLUSTER_SET_PRIVATE_PROPERTIES cluster control code request if its protocol server state is in the read/write state, as specified in section 3.1.1.