Baidu Intelligent Cloud Tech Hub

Aug 22, 2023 · Fundamentals

How Baidu’s CDS Uses Erasure Coding to Cut Storage Costs and I/O Amplification

This article explains Baidu Intelligent Cloud's block storage (CDS) architecture, comparing fault‑tolerance methods, detailing the challenges of large‑scale erasure‑coded storage, and describing Baidu's two‑layer append‑engine solution that reduces I/O amplification while keeping costs low.