The present disclosure includes methods, devices, modules, and systems for storing operational information in an array of memory cells. One method embodiment includes storing data units of operational information in memory cells of at least one row of a first block of memory cells. The method also includes using a column scramble to shift the order of the data units. The method includes storing the data units in memory cells of at least one row of a second block of memory cells, wherein an order of the data units stored in the at least one row of the second block is different than an order of the data units stored in memory cells of the at least one row of the first block.