On each request to activate a reclaim vector, the request must include the RECLVCTR keyword to specify the reclaim vector. The reclaim vector consists of a contiguous series of two-byte elements. You must define as many elements as there are assigned storage classes. Each element corresponds to one storage class: the first element, at offset 0, corresponds to storage class 1, the second element to storage class 2, the third to storage class 3, and so forth.

Before you issue the SET_RECLVCTR request, you must initialize each element of the reclaim vector to a value that indicates the number of times the system can reclaim resources from the corresponding storage class.