HYDIN0101E (OP0101) The cluster is out of empty physical volumes.

Explanation
			   Either the hourly check for empty stacked volumes did not return any empty
			stacked volumes, or an operation that requires empty stacked volumes was unable
			to identify any.
			

			   Operations that require empty stacked volumes include copying data from
			tape volume cache, and reclamation of unused space on stacked volumes.
			

		
Operator response
			   
				     
					Insert one or more cartridges that have VOLSERs within a
					range of physical volumes of the correct media type defined for this cluster.
				

			   

		
Source
Physical Cartridge