Dynamic xor bin mapping in memory devices

Abstract

A storage device includes multiple memory dies and a controller configured to: (i) perform XOR parity computations for parity bins based, at least in part, on updated contents of a first user data memory cell and contents of each user data memory cell also assigned to the first parity bin, (ii) storing the first parity data into a first parity memory cell associated with the first parity bin; (iii) identify a second parity memory cell for dynamic reconfiguration based, at least in part, on performance data of the non-volatile memory device, the second parity memory cell being assigned to a second parity bin; (iv) copy the second parity memory cell to a third memory cell of the plurality of memory cells; and (v) associate the third memory cell with the second parity bin, thereby making the third memory cell a parity memory cell of the plurality of parity memory cells.