Hardware Analytics and Lifecycle Optimization (HALO) at Facebook

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This post introduces the Hardware Analytics and Lifecycle Optimization (HALO) system at Facebook. HALO is designed to monitor, process, and visualize data from millions of hardware components to improve global hardware health and inform future hardware design. It leverages Lumberjack for data collection (SMART attributes, RAID logs, network interface logs, etc.), integrates with asset and ticketing systems, and uses Facebook's Operational Data Store (ODS). Data processing involves analyzing failure rates and error categories at a fleet level, with tools like Attribot for identifying known hardware issues and Systemic Issue Detection (SID) for identifying emerging systemic hardware problems. The outcomes include improved global hardware health through cross-functional remediation efforts with vendors and internal teams, and design improvements based on field experience, such as toolless serviceability and airflow design adjustments.