US 11,954,368 B2
Memory system controlling nonvolatile memory
Tatsuya Sasaki, Ota (JP)
Assigned to Kioxia Corporation, Tokyo (JP)
Filed by Kioxia Corporation, Tokyo (JP)
Filed on Sep. 13, 2022, as Appl. No. 17/943,266.
Claims priority of application No. 2022-047003 (JP), filed on Mar. 23, 2022.
Prior Publication US 2023/0305750 A1, Sep. 28, 2023
Int. Cl. G06F 3/00 (2006.01); G06F 3/06 (2006.01)
CPC G06F 3/0659 (2013.01) [G06F 3/0622 (2013.01); G06F 3/0664 (2013.01); G06F 3/0679 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A memory system comprising:
a nonvolatile memory;
a controller configured to control the nonvolatile memory;
a communication interface connectable to a plurality of hosts;
a virtual controller creation unit that is a circuit configured to create a virtual controller based on connection of a host to the communication interface; and
an access management unit that is a circuit configured to manage permission information, wherein
the controller is configured to manage a plurality of namespaces,
each of the plurality of namespaces is associated with a storage area of a plurality of storage areas of the nonvolatile memory,
the permission information is information indicating a correspondence between each of the plurality of namespaces and a host permitted to access the namespace, and
the virtual controller creation unit is configured to create, based on the permission information, a first virtual controller to which a namespace that a first host connected to the communication interface is permitted to access is attached, as a virtual controller to be used by the first host to access the nonvolatile memory.