The smartmontools package contains two utility programs (smartctl and smartd) to control and monitor storage systems using the Self-Monitoring, Analysis and Reporting Technology System (SMART) built into most modern ATA and SCSI harddisks.
Hard Disk Sentinel Alternatives for Mac
Hard Disk Sentinel is not available for Mac but there are a few alternatives that runs on macOS with similar functionality. The best Mac alternative is smartmontools, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Hard Disk Sentinel and three of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Hard Disk Sentinel are DriveDx and SMARTReporter.
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Alternatives list
25 smartmontools alternatives
41 DriveDx alternativesAdvanced tool delivering real-time HDD and SSD health diagnostics, S.M.A.R.T. and failure indicator analysis, pre-failure alerts, temperature tracking, performance and health ratings, automatic health reports by email, history-based insights, and user-friendly interface.
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SMARTReporter is an application that can warn you of some hard disk drive failures before they actually happen! It does so by periodically polling the built-in S.M.A.R.T. status of your hard disk drives as well as performing other checks for "I/O errors" or R.A.I.
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