1. A method for execution by one or more processing modules of one or more computing devices of a dispersed storage network (DSN), the method comprises: tracking a number of reads and writes to a memory device within DSN memory; mapping the tracked number of reads and writes to a counter that tracks a physical region of the memory device that is impacted by the reads and writes; determining a highest-to-lowest ranking of memory device wear based on the mapping; and moving data located at a highly ranked data location to a new location with a lower ranking.