WebUI for smartd S.M.A.R.T HDD monitoring

NOTE: Scrutiny is a Work-in-Progress and still has some rough edges.

Why Scrutiny?

If you run a server with more than a couple of hard drives, you’re probably already familiar with S.M.A.R.T and the smartd daemon. If not, it’s an incredible open source project described as the following:

smartd is a daemon that monitors the Self-Monitoring, Analysis and Reporting Technology (SMART) system built into many ATA, IDE and SCSI-3 hard drives. The purpose of SMART is to monitor the reliability of the hard drive and predict drive failures, and to carry out different types of drive self-tests.

Example Web UI:

Theses S.M.A.R.T hard drive self-tests can help you detect and replace failing hard drives before they cause permanent data loss. However, there’s a couple issues with smartd:

• There are more than a hundred S.M.A.R.T attributes, however smartd does not differentiate between critical and informational metrics
• smartd does not record S.M.A.R.T attribute history, so it can be hard to determine if an attribute is degrading slowly over time.
• S.M.A.R.T attribute thresholds are set by the manufacturer. In some cases these thresholds are unset, or are so high that they can only be used to confirm a failed drive, rather than detecting a drive about to fail.
• smartd is a command line only tool. For head-less servers a web UI would be more valuable.

Scrutiny is a Hard Drive Health Dashboard & Monitoring solution, merging manufacturer provided S.M.A.R.T metrics with real-world failure rates.

Find out more here.