SYSTEM AND METHOD OF WEAR LEVELING FOR A NON-VOLATILE MEMORY

摘要

In an architecture of wear leveling for a non-volatile memory composed of plural storage units, a translation layer is configured to translate a logical address provided by a host to a physical address of the non-volatile memory. A cold-block table is configured to assign a cold block or blocks in at least one storage unit, the cold block in a given storage unit having an erase count being less than erase counts of non-cold blocks in the given storage unit. The logical addresses and the associated physical addresses of the cold blocks are recorded in the cold-block table, thereby building a cold-block pool composed of the cold blocks.

主权项

1. A system of wear leveling for a non-volatile memory, comprising:
a plurality of storage units in the non-volatile memory; a translation layer configured to translate a logical address provided by a host to a physical address of the non-volatile memory; and a cold-block table configured to assign a cold block or blocks in at least one said storage unit, the cold block in a given storage unit having an erase count being less than erase counts of non-cold blocks in the given storage unit; wherein the logical addresses and the associated physical addresses of the cold blocks are recorded in the cold-block table, thereby building a cold-block pool composed of the cold blocks.