A plurality of addressable memory tiles each comprise one or more cross-point arrays. Each array comprises a plurality of non-volatile resistance-change memory cells. A controller is configured to couple to the array and to a host system. The controller is configured to perform receiving, from the host system, one or more data objects each having a size equal to a predetermined logical block size, and storing the one or more data objects in a corresponding integer number of one or more of the memory tiles.