Micron Technology, Inc.
Memory die remapping

Abstract:

Exemplary methods, apparatuses, and systems include a controller detecting a trigger to configure a memory. The memory includes a plurality of dice, including two or more spare dice. The controller accesses each die via one of a plurality of channels. The controller accesses a first spare die via a first channel and the second spare die via a second channel. In response to detecting the trigger, the controller maps a plurality of logical units to the plurality of dice, excluding the two spare dice. The mapping includes mapping each logical unit of the plurality of logical units across multiple dice of the plurality of dice, such that a first half of the plurality of logical units reside on dice accessible via channels other than the first channel and a second half of the plurality of logical units reside on dice accessible via channels other than the second channel.