1. A method of storing data in a dynamic random access memory (“DRAM”) device in either a normal operating mode when the DRAM device is active or a power-saving mode when the DRAM is inactive, the method comprising: in the normal operating mode, refreshing memory cells in the DRAM device at a first rate; and in the power-saving mode, scrubbing the memory cells in the DRAM device at a second rate that is substantially less than the first rate.