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From RAID to Erasure Coding: A Deterministic Guide to Storage SLAs for AI and Analytics
The erasure coding vs RAID debate ends the moment a second drive fails mid-rebuild on a petabyte-scale cluster. There is a specific kind of silence that fills a data center when that happens during a RAID 6 rebuild. I experienced it firsthand in 2018 during a massive Hadoop cluster migration. We were pushing 20PB of…
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