公开(公告)号：US11675697B2

公开(公告)日：2023-06-13

申请号：US17590310

申请日：2022-02-01

Applicant: KIOXIA CORPORATION

Inventor： Kazuhiro Fukutomi ,  Kenichiro Yoshii ,  Shinichi Kanno ,  Shigehiro Asano

IPC: G06F12/02 ,  G06F3/06 ,  G06F12/00 ,  G06F12/16 ,  G06F13/16

CPC classification number: G06F12/0246 ,  G06F3/061 ,  G06F3/064 ,  G06F3/0631 ,  G06F3/0659 ,  G06F3/0679 ,  G06F12/00 ,  G06F12/16 ,  G06F3/0608 ,  G06F3/0611 ,  G06F3/0638 ,  G06F3/0644 ,  G06F3/0665 ,  G06F3/0688 ,  G06F2212/1016 ,  G06F2212/214 ,  G06F2212/7202 ,  G06F2212/7205

Abstract: According to one embodiment, a write instructing unit instructs a data access unit to write, in a storage area of a data storage unit indicated by a first physical address, write object data, instructs a management information access unit to update address conversion information, and instructs a first access unit to update the first physical address. A compaction unit extracts a physical address of compaction object data, instructs the data access unit to read the compaction object data stored in a storage area of the data storage unit indicated by the physical address, instructs the data access unit to write the compaction object data in a storage area of the data storage unit indicated by a second physical address, instructs the management information access unit to update the address conversion information, and instructs a second access unit to update the second physical address.

公开(公告)号：US11513683B2

公开(公告)日：2022-11-29

申请号：US17112094

申请日：2020-12-04

Applicant: Kioxia Corporation

Inventor： Shigehiro Asano ,  Julien Margetts ,  Philip David Rose

IPC: G06F3/06 ,  G06F12/02

Abstract: A data storage device capable of namespace re-sizing comprises a nonvolatile semiconductor storage device containing data accessed via a logical address that includes a namespace identifier and a logical block address, and a controller. The storage device can convert the namespace identifier to a base address using a first look up table. The storage device can further convert the logical block address to namespace allocation units of storage. The storage device can also determine a pointer using the base address, the namespace allocation units, and a second look up table. Further, the storage device can determine a full logical cluster address using the pointer.