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公开(公告)号：US20200379903A1
公开(公告)日：2020-12-03
申请号：US16947804
申请日：2020-08-18
Applicant: Seagate Technology LLC
Inventor： Stephen H. Perlmutter , Stacey Secatch , Andrew Louder
Abstract: Apparatus and method for managing a non-volatile memory (NVM) such as a flash memory in a solid-state drive (SSD). In some embodiments, the NVM is arranged as a plurality of semiconductor memory dies coupled to a controller circuit using a plurality of channels. The controller circuit divides the plurality of dies into a succession of garbage collection units (GCUs). Each GCU is independently erasable and allocatable for storage of user data. The GCUs are staggered so that each GCU is formed from a different subset of the dies in the NVM. In further embodiments, the dies are arranged into NVM sets in accordance with the NVMe (Non-Volatile Memory Express) specification with each NVM set addressable by a different user for storage of data in a separate set of staggered GCUs.
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公开(公告)号：US11334481B2
公开(公告)日：2022-05-17
申请号：US16947804
申请日：2020-08-18
Applicant: Seagate Technology LLC
Inventor： Stephen H. Perlmutter , Stacey Secatch , Andrew Louder
Abstract: Apparatus and method for managing a non-volatile memory (NVM) such as a flash memory in a solid-state drive (SSD). In some embodiments, the NVM is arranged as a plurality of semiconductor memory dies coupled to a controller circuit using a plurality of channels. The controller circuit divides the plurality of dies into a succession of garbage collection units (GCUs). Each GCU is independently erasable and allocatable for storage of user data. The GCUs are staggered so that each GCU is formed from a different subset of the dies in the NVM. In further embodiments, the dies are arranged into NVM sets in accordance with the NVMe (Non-Volatile Memory Express) specification with each NVM set addressable by a different user for storage of data in a separate set of staggered GCUs.
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公开(公告)号：US10747662B2
公开(公告)日：2020-08-18
申请号：US16022822
申请日：2018-06-29
Applicant: Seagate Technology LLC
Inventor： Stephen H. Perlmutter , Stacey Secatch , Andrew Louder
Abstract: Apparatus and method for managing a non-volatile memory (NVM) such as a flash memory in a solid-state drive (SSD). In some embodiments, the NVM is arranged as a plurality of semiconductor memory dies coupled to a controller circuit using a plurality of channels. The controller circuit divides the plurality of dies into a succession of garbage collection units (GCUs). Each GCU is independently erasable and allocatable for storage of user data. The GCUs are staggered so that each GCU is formed from a different subset of the dies in the NVM. In further embodiments, the dies are arranged into NVM sets in accordance with the NVMe (Non-Volatile Memory Express) specification with each NVM set addressable by a different user for storage of data in a separate set of staggered GCUs.
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公开(公告)号：US20200004676A1
公开(公告)日：2020-01-02
申请号：US16022822
申请日：2018-06-29
Applicant: Seagate Technology LLC
Inventor： Stephen H. Perlmutter , Stacey Secatch , Andrew Louder
Abstract: Apparatus and method for managing a non-volatile memory (NVM) such as a flash memory in a solid-state drive (SSD). In some embodiments, the NVM is arranged as a plurality of semiconductor memory dies coupled to a controller circuit using a plurality of channels. The controller circuit divides the plurality of dies into a succession of garbage collection units (GCUs). Each GCU is independently erasable and allocatable for storage of user data. The GCUs are staggered so that each GCU is formed from a different subset of the dies in the NVM. In further embodiments, the dies are arranged into NVM sets in accordance with the NVMe (Non-Volatile Memory Express) specification with each NVM set addressable by a different user for storage of data in a separate set of staggered GCUs.
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