Usage balancing

Usage balancing is useful when the auxiliary storage pool (ASP) contains some disk units that are used to a higher degree than other disk units in the ASP.

The Trace Auxiliary Storage Pool Balance (TRCASPBAL) command must finish collecting statistics before usage balancing can begin. When you use usage balancing, the high use and low use data on each unit in the ASP is redistributed to balance the arm utilization of each unit within the specified ASP.