Google Colossus: SSD performance at HDD prices

cis_female · x · 2026-08-27

Links to Google Cloud blog about Colossus, Google's foundational distributed storage system. Used by YouTube, Gmail, and BigQuery, it rivals parallel file systems in throughput while maintaining object storage scale. Cloud Storage uses Colossus SSD caching to deliver the cheapest storage while supporting intensive AI/ML I/O.

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