HYDIN0172I (OP0172) Automatic removal of logical volumes on this cluster has been disabled due to a small cache resident-only partition size.

Explanation
			   For the TS7700 Engine with the tape attach feature
				code, automatic removal of logical volumes is automatically disabled
				when the allocated size of the cache resident-only partition is less
				than 10 TB.

		
Operator response
			   If automatic removal of logical volumes is required, the
				cache resident-only partition must have more than 10 TB of allocated
				space. To enlarge the cache resident-only partition, consider the
				following:

			   
				     Delete one or more tape attach partition.

				     Reduce the allocated cache size of one or more tape attach
					partition.

			   

		
Source
Cache