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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

Other aspects and embodiments of the present invention will become apparent from the following detailed description, which, when taken in conjunction with the drawings, illustrate by way of example the principles of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram of a network architecture, in accordance with one embodiment.

FIG. 2 is a diagram of a representative hardware environment that may be associated with the servers and/or clients of FIG. 1, in accordance with one embodiment.

FIG. 3 is a diagram of a tiered data storage system, in accordance with one embodiment.

FIG. 4A is a cross-sectional view of an optical disk, in accordance with one embodiment.

FIG. 4B is a detailed view of a portion of the optical disk of FIG. 4A, in accordance with one embodiment.

FIG. 4C is a top-down view of the face of the optical disk of FIG. 4A, in accordance with one embodiment.

FIG. 4D is a partial representational view of an optical storage system, in accordance with one embodiment.

FIG. 4E is a representational overview of a rack enclosure, in accordance with one embodiment.

FIG. 5 is a flowchart of a method, in accordance with one embodiment.

權(quán)利要求

1
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