CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2020-046711, filed Mar. 17, 2020, the entire contents of which are incorporated herein by reference.

FIELD

Embodiments described herein relate generally to a memory system and a method of controlling a nonvolatile memory.

BACKGROUND

Recently, storage devices which control nonvolatile memories are widely used.

As such storage devices, a solid state drive (SSD) including a NAND flash memory is known. The SSD is used in various computers.

In the SSD, there is a demand of implementing a technique for efficiently managing each namespace used by a host to access the SSD.

