Argus Disk vs SMART Sniffer

Argus Disk is a Linux SMART monitoring daemon for homelab systems. It gathers drive attributes every six hours and keeps a rolling 180-day history; linear regression uses that record to estimate when an attribute may reach its critical threshold. The maker says its thresholds are calibrated with Backblaze failure data rather than vendor defaults. Temperature anomaly detection uses z-scores, requiring a score of at least 2.0 over 10 or more samples. Optional ntfy integration can send status-change alerts with priority routing. An optional Prometheus exporter makes disk health, status, temperature, sector counts, forecasts, and overall status available to dashboards such as Grafana. Argus supports JMicron JMB576 pass-through for multi-bay DAS enclosures, including TerraMaster D5-300 and similar devices. The maker says it runs on the user's hardware, without cloud use, and keeps data within the user's network. It requires a Linux host, Python 3.10 or later, and smartmontools; ntfy and Prometheus with Grafana are optional. Argus is free and distributed under the MIT License.

SMART Sniffer monitors disk health and sends warnings to Home Assistant. A lightweight Go agent runs on each monitored machine, where every drive appears as its own Home Assistant device. Its Attention Needed sensor covers ATA, SATA, NVMe, and SAS drives, returning NO, MAYBE, YES, or UNSUPPORTED. When a drive’s health changes, persistent Home Assistant notifications can appear automatically, with options to escalate, de-escalate, or dismiss them automatically. Agents advertise on the local network through mDNS/Zeroconf, allowing Home Assistant to find them without manual IP entry. Filesystem monitoring is optional; for configured mountpoints, it reports total, used, and available bytes plus usage percentage. An integration service call can provide SMART data and assessments for use with Google AI, ChatGPT, Claude, or Ollama. The agent also exposes HTTP endpoints for health, drive summaries, individual SMART data, and filesystem usage. SMART Sniffer is free and MIT-licensed. It requires smartmontools 7.0 or newer for JSON output; some USB enclosures that block SMART passthrough are reported as unsupported with unknown health.