公开(公告)号：US20200004448A1

公开(公告)日：2020-01-02

申请号：US16021134

申请日：2018-06-28

Applicant: Seagate Technology LLC

Inventor： Stacey Secatch ,  Steven S. Williams ,  David W. Claude ,  Benjamin J. Scott ,  Kyumsung Lee ,  Jeff Rogers

IPC: G06F3/06

Abstract: A data storage system can arrange semiconductor memory into a plurality of die sets that each store a top-level map with each top-level map logging information about user-generated data stored in a die set in which the top-level map is stored. A journal can be stored in at least one die set of the plurality of die sets with each journal logging a change to user-generated data stored in the die set of the plurality of die sets in which the journal and top-level map are each located.

公开(公告)号：US20200004450A1

公开(公告)日：2020-01-02

申请号：US16023199

申请日：2018-06-29

Applicant: Seagate Technology LLC

Inventor： Stacey Secatch ,  David W. Claude ,  Steven S. Williams ,  Jeff Rogers

IPC: G06F3/06 ,  G06F13/16 ,  G06F13/42

Abstract: Apparatus and method for managing metadata in a data storage device, such as a solid-state drive (SSD). In some embodiments, a non-volatile memory (NVM) includes a population of semiconductor memory dies. The dies are connected a number of parallel channels such that less than all of the semiconductor dies are connected to each channel. A controller circuit apportions the semiconductor memory dies into a plurality of die sets, with each die set configured to store user data blocks associated with a different user. The controller circuit subsequently rearranges the dies into a different arrangement of die sets so that at least one die is migrated from a first dies set to a second die set. A map manager circuit is configured to establish an array of pointers in a memory to identify contiguous portions of map metadtata that describe user data stored in the at least one migrated die.

公开(公告)号：US20200004636A1

公开(公告)日：2020-01-02

申请号：US16023234

申请日：2018-06-29

Applicant: Seagate Technology LLC

Inventor： Stacey Secatch ,  Steven S. Williams ,  David W. Claude ,  Benjamin J. Scott ,  Kyumsung Lee ,  Jeff Rogers

IPC: G06F11/14 ,  G06F1/30 ,  G06F12/02 ,  G06F3/06

Abstract: A data storage system can connect a plurality of remote hosts to a plurality of die sets resident in a semiconductor memory. Execution of at least one data access command addressed by a remote host of the plurality of remote hosts can occur prior to a power interruption event being detected for at least one die set of the plurality of die sets. User-generated data associated with the at least one data access command may then be flushed to a predetermined location responsive to an available resource budget associated with the power interruption event.

公开(公告)号：US10949110B2

公开(公告)日：2021-03-16

申请号：US16023199

申请日：2018-06-29

Applicant: Seagate Technology LLC

Inventor： Stacey Secatch ,  David W. Claude ,  Steven S. Williams ,  Jeff Rogers

IPC: G06F3/06 ,  G06F13/16 ,  G06F13/42

Abstract: Apparatus and method for managing metadata in a data storage device, such as a solid-state drive (SSD). In some embodiments, a non-volatile memory (NVM) includes a population of semiconductor memory dies. The dies are connected a number of parallel channels such that less than all of the semiconductor dies are connected to each channel. A controller circuit apportions the semiconductor memory dies into a plurality of die sets, with each die set configured to store user data blocks associated with a different user. The controller circuit subsequently rearranges the dies into a different arrangement of die sets so that at least one die is migrated from a first dies set to a second die set. A map manager circuit is configured to establish an array of pointers in a memory to identify contiguous portions of map metadtata that describe user data stored in the at least one migrated die.