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Storage systems implementing offset erasure code stripes

專利號
US11175986B1
公開日期
2021-11-16
申請人
International Business Machines Corporation(US NY Armonk)
發(fā)明人
John Stewart Best; Steven Robert Hetzler
IPC分類
G06F11/00; G06F11/10; G11B5/82; G11B7/24097; H03M13/15
技術(shù)領(lǐng)域
erasure,storage,strips,disk,optical,in,code,failure,stripe,disks
地域: NY NY Armonk

摘要

A computer-implemented method, according to one embodiment, includes: selecting strips from each storage unit for a given erasure code stripe such that the given erasure code stripe includes at most one strip from a high failure rate region of the respective storage unit, where each of the storage units include high and low failure rate regions. The selected strips are organized such that a number of each strip in the given erasure code stripe is offset from the remaining strips by an amount that is greater than a total number of strips in the high failure rate regions. The organized selected strips are further mapped to form the given erasure code stripe such that the high failure rate regions on each storage unit are mapped to one or more sequentially numbered strips, and the low failure rate regions are mapped to additional sequentially numbered strips.

說明書

Furthermore, FIG. 4D depicts an optical storage system 450 having a plurality of optical disks 460 therein, in accordance with one embodiment. As an option, the present optical storage system 450 may be implemented in conjunction with features from any other embodiment listed herein, such as those described with reference to the other FIGS., such as FIGS. 4A-4C. However, such optical storage system 450 and others presented herein may be used in various applications and/or in permutations which may or may not be specifically described in the illustrative embodiments listed herein. Further, the optical storage system 450 presented herein may be used in any desired environment. Thus FIG. 4D (and the other FIGS.) may be deemed to include any possible permutation.

權(quán)利要求

1
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