公开(公告)号：US11138069B2

公开(公告)日：2021-10-05

申请号：US16212242

申请日：2018-12-06

Applicant: Seagate Technology LLC

Inventor： Stephen H. Perlmutter ,  Steven S. Williams ,  Benjamin J. Scott ,  Andrew J. Louder ,  Kyumsung Lee ,  Robert W. Dixon

IPC: G06F11/00 ,  G06F11/10 ,  G11C29/52 ,  H03M13/29

Abstract: Apparatus and method for storing data in a non-volatile memory (NVM), such as a flash memory in a solid-state drive (SSD). In some embodiments, a distributed storage space of the NVM is defined to extend across a plural number of regions of the NVM. A non-standard parity data set is provided having a plural number of data elements greater than or equal to the plural number of regions in the storage space. The data set is written by storing a first portion of the data elements and a first parity value to the plural number of regions and a remaining portion of the data elements and a second parity value to a subset of the plural number of regions. The regions can comprise semiconductor dies in a flash memory, and the distributed storage space can be a garbage collection unit formed using one erasure block from each flash die.