SMART on Netdata

10 Best Disk Health & S.M.A.R.T. Monitoring Tools

Wed, 12 Aug 2026 00:00:00 +0000

Best NVMe & SSD Health Monitoring Tools: 9 Options Ranked

Wed, 12 Aug 2026 00:00:00 +0000

Native macOS Monitoring: Logs, Sensors, GPU & Hardware Health

Wed, 15 Jul 2026 00:00:00 +0000

We’ve overhauled macOS monitoring in the latest Netdata release. Netdata already collects system metrics on Macs at per-second resolution; this release completes the picture with logs and hardware telemetry, areas that previously required users to run CLI tools like log show and powermetrics. The new collectors read this data through Apple’s own frameworks, allowing users to trace application and OS errors and catch hardware issues early.

Hetzner Monitoring With Real-Time Observability

Thu, 18 Dec 2025 00:00:00 +0000

Complete monitoring solution for Hetzner infrastructure with 1-second granularity, automated hardware health tracking, and AI-powered troubleshooting. Eliminates native monitoring gaps while reducing costs by 90%.

Ceph PG inconsistent (OSD_SCRUB_ERRORS): scrub found replica divergence

Mon, 01 Jan 0001 00:00:00 +0000

A scrub or deep-scrub finished comparing replicas for a placement group and found they disagree. The cluster surfaces this as OSD_SCRUB_ERRORS (often paired with PG_DAMAGED) and the affected PG sits in active+clean+inconsistent. Client reads still succeed because Ceph serves them from a consistent replica, but at least one copy in the acting set is corrupt.

The danger is not the symptom. Reads work, and Ceph did what it was designed to do: detect silent divergence. The danger is that the corruption was found, not fixed, and the window during which an uncorrupted replica survives is your margin of safety. If the OSD holding the good copy fails before you repair, the object becomes unreadable or unwritable.

S.M.A.R.T. attributes Monitoring

Mon, 01 Jan 0001 00:00:00 +0000

What makes a storage device S.M.A.R.T.?

S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) is a supplementary component built into many modern storage devices through which devices monitor, store, and analyze the health of their operation. Statistics are collected (temperature, number of reallocated sectors, seek errors etc.) which software can use to measure the health of a device, predict possible device failure, and provide notifications on unsafe values.

When S.M.A.R.T. data indicates a possible imminent drive failure, software running on the host system may notify the user so preventive action can be taken to prevent data loss, and the failing drive can be replaced and data integrity maintained.

S.M.A.R.T. Monitoring

Mon, 01 Jan 0001 00:00:00 +0000

S.M.A.R.T. Monitoring

What Is S.M.A.R.T.?

S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) is an integral system used within computers and storage devices to monitor the health and reliability of storage units. Specifically, S.M.A.R.T. helps in foreseeing potential hardware failures and enhances the ability to carry out proactive diagnostics, ultimately saving critical data from unexpected storage disasters. For more technical insight, you can check man page of smartd.

Monitoring S.M.A.R.T. with Netdata

Netdata provides a robust solution to monitor S.M.A.R.T. Enabled with the go.d.plugin and smartctl module, Netdata seamlessly assesses the health of your storage devices. Without directly executing potentially risky binaries, Netdata utilizes ndsudo, a secure, privileged command execution utility that enhances operational security and smoothens permission challenges. Dive deeper by reading the S.M.A.R.T. collector documentation.