MEMORY SYSTEM, COMPUTER SYSTEM, AND MEMORY MANAGEMENT METHOD

摘要

PROBLEM TO BE SOLVED: To enable the operation of a computer system which reduces the occurrence of a failure that disables the start of a computer system.SOLUTION: A memory system according to one embodiment of the present invention includes: a nonvolatile memory that has a physical storage area; and a controller that performs data transfer between the nonvolatile memory and a host. The controller includes: a division management unit; and a wear-leveling unit. The division management unit divides the physical storage area into a plurality of divisions that includes a first division and one or more second divisions. The wear-leveling unit executes wear-leveling independently for each division in the second divisions without executing wear-leveling in the first division. At this point, the division management unit expands a division according to an area expansion request from the host.