SMART Sniffer review
A focused, open-source monitor for SMART data, SSD wear, and multi-machine alerts.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
SMART Sniffer is an open-source disk health monitoring integration for Home Assistant, supported by a Go agent that collects drive data through smartmontools. It is intended for people managing ATA, SATA, NVMe, SAS, and SSD storage across Linux, macOS, and Windows machines. The product creates per-drive sensors for SMART health, pass/fail status, temperature, power-on hours, SMART attributes, SSD wear-leveling, and percentage-used diagnostics. Its failure-indicator classification uses NO, MAYBE, YES, and UNSUPPORTED states, giving users a more specific assessment than a single health label.
For multi-machine environments, the architecture is practical but operationally distributed: each machine uses one agent, while mDNS/Zeroconf supports automatic discovery. Home Assistant can issue persistent notifications when monitored health conditions change, and filesystem usage monitoring adds mountpoint-level visibility alongside drive telemetry. The REST API exposes drive summaries and full SMART data, making the monitoring layer available to other software as well. This combination suits a home-lab or household setup that already treats Home Assistant as a central dashboard.
Security and deployment controls are present without changing the product’s self-hosted character. The agent supports optional bearer-token authentication, and downloads can be verified with SHA256. SMART Sniffer is a strong fit for users who want detailed storage diagnostics, SSD wear tracking, drive-failure classification, and machine discovery in an open-source Home Assistant workflow. It is less suitable for buyers seeking a hosted service, a standalone monitoring console, or a deployment that avoids installing and maintaining an agent on every monitored machine.
SMART Sniffer pros and cons
- Where it wins
- Tracks SMART health, SSD wear, temperatures, and drive attributes
- Monitors multiple machines with one agent per machine
- Adds discovery, filesystem checks, notifications, and a REST API
- Where it doesn't
- Multi-machine monitoring requires an agent on each machine
- Home Assistant is central to its notification workflow
- Self-hosted operation requires managing the agent and integration
SMART Sniffer fact sheet, pricing and score →
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