公开(公告)号：US20220334768A1

公开(公告)日：2022-10-20

申请号：US17459539

申请日：2021-08-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tushar Tukaram Patil ,  Anantha Sharma ,  Sharath Kumar Kodase

IPC: G06F3/06 ,  G06F11/10 ,  G06F12/10

Abstract: A method for reading data in a storage device is provided. The method includes receiving a read command from a host device, wherein the read command indicates stored data in the storage device and a Logical Block Address (LBA) of the stored data; obtaining a Physical Block Number (PBN) based on the LBA and a Logical to Physical (L2P) mapping; determining whether the PBN corresponds to a volatile memory of the storage device; reading the stored data directly from the volatile memory based on the PBN corresponding to the volatile memory; incrementing a read counter associated with the PBN based on the stored data being read directly from the volatile memory; and reading the stored data from a non-volatile memory of the storage device based on the PBN not corresponding to the volatile memory.

公开(公告)号：US12277322B2

公开(公告)日：2025-04-15

申请号：US18076686

申请日：2022-12-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Suman Prakash Balakrishnan ,  Anantha Sharma ,  Tushar Tukaram Patil ,  Rakesh Balakrishnan

IPC: G06F3/00 ,  G06F3/06 ,  G06F12/00

Abstract: A method of operating a solid state drive (SSD) is provided. The method includes generating, by a controller provided in the SSD, a free block list indicating a plurality of free super blocks, wherein adjacent free super blocks of the plurality of free super blocks correspond to different dies of a plurality of dies provided in the SSD; and allocating, by the controller, a free super block from among the plurality of free super blocks indicated by the free block list for each of a host write operation and a garbage collection write operation, according to a sequence of the plurality of free super blocks indicated by the free block list.

公开(公告)号：US11941252B2

公开(公告)日：2024-03-26

申请号：US17884018

申请日：2022-08-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tushar Tukaram Patil ,  Anantha Sharma ,  Sharath Kumar Kodase ,  Suman Prakash Balakrishnan

IPC: G06F3/06

CPC classification number: G06F3/0617 ,  G06F3/0655 ,  G06F3/0679

Abstract: Provided are methods, apparatuses, systems, and computer-readable storage media for reducing an open time of a solid-state drive (SSD). In an embodiment, a method includes dividing a logical-to-physical (L2P) address mapping table of the SSD into a plurality of segments. The method further includes assigning one journal buffer of a plurality of journal buffers to each segment of the plurality of segments. The method further includes recreating, during a power on sequence of the SSD, a portion of the plurality of segments by replaying a first subset of the plurality of journal buffers. The method further includes sending, to a host device, a device-ready signal upon successful recreation of the portion of the plurality of segments. The method further includes recreating, in a background mode, a remaining portion of the plurality of segments by replaying a second subset of the plurality of journal buffers.

公开(公告)号：US11886741B2

公开(公告)日：2024-01-30

申请号：US17459539

申请日：2021-08-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tushar Tukaram Patil ,  Anantha Sharma ,  Sharath Kumar Kodase

IPC: G06F3/06 ,  G06F11/10 ,  G06F12/10

CPC classification number: G06F3/0659 ,  G06F3/0611 ,  G06F3/0631 ,  G06F3/0656 ,  G06F3/0679 ,  G06F11/1004 ,  G06F12/10 ,  G06F2212/657

Abstract: A method for reading data in a storage device is provided. The method includes receiving a read command from a host device, wherein the read command indicates stored data in the storage device and a Logical Block Address (LBA) of the stored data; obtaining a Physical Block Number (PBN) based on the LBA and a Logical to Physical (L2P) mapping; determining whether the PBN corresponds to a volatile memory of the storage device; reading the stored data directly from the volatile memory based on the PBN corresponding to the volatile memory; incrementing a read counter associated with the PBN based on the stored data being read directly from the volatile memory; and reading the stored data from a non-volatile memory of the storage device based on the PBN not corresponding to the volatile memory.

公开(公告)号：US20230400987A1

公开(公告)日：2023-12-14

申请号：US17884018

申请日：2022-08-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tushar Tukaram Patil ,  Anantha Sharma ,  Sharath Kumar Kodase ,  Suman Prakash Balakrishnan

IPC: G06F3/06

CPC classification number: G06F3/0617 ,  G06F3/0679 ,  G06F3/0655

Abstract: Provided are methods, apparatuses, systems, and computer-readable storage media for reducing an open time of a solid-state drive (SSD). In an embodiment, a method includes dividing a logical-to-physical (L2P) address mapping table of the SSD into a plurality of segments. The method further includes assigning one journal buffer of a plurality of journal buffers to each segment of the plurality of segments. The method further includes recreating, during a power on sequence of the SSD, a portion of the plurality of segments by replaying a first subset of the plurality of journal buffers. The method further includes sending, to a host device, a device-ready signal upon successful recreation of the portion of the plurality of segments. The method further includes recreating, in a background mode, a remaining portion of the plurality of segments by replaying a second subset of the plurality of journal buffers.