Disk rebuild times: 2026 MinIO Erasure Coding (EC:4+2) vs (EC:8+3) — 4-hour RPO or fail

MinIO EC:4+2 reads 4 shards per object vs 8 for EC:8+3, doubling rebuild read fan-out. Only schemes meeting a strict 4-hour RPO pass for multi-drive failure recovery. Independent technical note mirroring the canonical version: https://x-oss.com/blog/disk-rebuild-times-2026-minio-erasure-coding-ec42-vs-ec83-4-hour-rpo-or-fail.php

Authors

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-04
DOI
https://doi.org/10.5281/zenodo.23963609
Primary Topic
Advanced Data Storage Technologies
Type
preprint
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preprint

Disk rebuild times: 2026 MinIO Erasure Coding (EC:4+2) vs (EC:8+3) — 4-hour RPO or fail

Wei Chen
Zenodo (CERN European Organization for Nuclear Research)
Advanced Data Storage Technologies
preprint

Disk rebuild times: 2026 MinIO Erasure Coding (EC:4+2) vs (EC:8+3) — 4-hour RPO or fail

Wei Chen
preprint en

Abstract

MinIO EC:4+2 reads 4 shards per object vs 8 for EC:8+3, doubling rebuild read fan-out. Only schemes meeting a strict 4-hour RPO pass for multi-drive failure recovery. Independent technical note mirroring the canonical version: https://x-oss.com/blog/disk-rebuild-times-2026-minio-erasure-coding-ec42-vs-ec83-4-hour-rpo-or-fail.php

Zenodo (CERN European Organization for Nuclear Research)
Advanced Data Storage Technologies
DOIOpen Access PDFOpenAlex
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Disk rebuild times: 2026 MinIO Erasure Coding (EC:4+2) vs (EC:8+3) — 4-hour RPO or fail — Wei Chen · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS