# Why I Bypassed FUSE: Building a Transparent DataTiering Engine in Rust

Short summary

HuskHoard is an open-source Linux HSM alternative that automatically tiers cold data to cheap storage (HDD, tape, S3) while hot data runs on NVMe at native speed. It replaces FUSE with the fanotify API to intercept only archived file accesses, eliminating performance overhead. Data is stored in standard formats (Zstd, SQLite, Parquet) so users can extract archives independently.

• •Open-source Linux alternative to expensive enterprise HSM software with support for NVMe, HDD, tape, and S3 storage tiers
• •Uses fanotify kernel API instead of FUSE to avoid I/O overhead on hot data
• •Data stored in standard formats (Zstd, SQLite, Parquet) so users can extract data independently

Generated with AI, which can make mistakes.