According to online reports, according to DeepSeek's announcement, on the fifth day of Open Source Week, its Fire-Flyer File System (3FS) was officially open source. As a high-performance parallel file system, 3FS can make full use of modern SSDs and RDMA networks to achieve high-speed data access. Improve AI model training and reasoning efficiency. 3FS key performance indicators: achieve a total read throughput of 6.6 TiB/s in an 180-node cluster; achieve a throughput of 3.66 TiB/minute in the 25-node GraySort benchmark; peak query throughput of single-node KVCache exceeds 40+ GiB/s. 3FS adopts a separate architecture that supports data preprocessing, data set loading, checkpoint storage/recovery, embedded vector search and inferential KVCache queries, and has strong consistent semantics. DeepSeek simultaneously launched the Smallpond data processing framework to further optimize 3FS data management capabilities.