The end-to-end refresh of our server hardware fleet

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This post details the end-to-end refresh of Meta's server hardware fleet, introducing new chassis designs: Bryce Canyon for high-density storage (72 HDDs in 4 OU, 20% higher density than Open Vault, improved thermal/power efficiency), Big Basin for AI GPU training (30% larger models, 100% throughput improvement over Big Sur, disaggregated GPU design), Tioga Pass for general compute (dual-socket, M.2 NVMe support, doubled PCIe bandwidth, 100G NIC), and Yosemite v2 (modular multi-node chassis with hot-service capability). These designs leverage Open Compute Project standards and technologies like OpenBMC for system management, aiming for increased efficiency, performance, and modularity.