REDUNDANT DATA STORAGE SCHEMES FOR MULTI-DIE MEMORY SYSTEMS

摘要

A method for data storage includes storing data in a memory that includes one or more memory units, each memory unit including memory blocks. The stored data is compacted by copying at least a portion of the data from a first memory block to a second memory block, and subsequently erasing the first memory block. Upon detecting a failure in the second memory block after copying the portion of the data and before erasure of the first memory block, the portion of the data is recovered by reading the portion from the first memory block.

主权项

1. An apparatus, comprising:
a first memory device, wherein the first memory device includes a first plurality of blocks; a second memory device, wherein the second memory device includes a second plurality of blocks; and a controller coupled to the first memory device and the second memory device, wherein the controller is configured to:
read data stored in a first block of the first plurality of blocks;store the read data in a second block of the second plurality of blocks;check the data stored in the second block of the second plurality of blocks; andre-read the data stored in the first block of the first plurality of blocks responsive to a determination that the data stored in the second block of the second plurality of blocks includes at least one error.