S.M.A.R.T. Tasks

S.M.A.R.T (Self-Monitoring, Analysis and Reporting Technology) is a storage drive health monitoring system that can give you early warning if a drive is about to fail, so you can prepare accordingly. 

On TrueNAS, you can setup automated S.M.A.R.T tests on a schedule to monitor your HDD or SSD health. 

To get started, login to your TrueNAS WebGUI. Navigate to Tasks -> S.M.A.R.T. Tests.

Click on Add to start adding a new S.M.A.R.T. Test task.

Under Disks, select the drive disks that you want to test. 

You can find out which drive numbers belong to which storage pool in Storage -> Disks, and sort by the Pool column.

Under the Type, you can select Short, Long, Conveyance, or Offline test. 

Short, Long, Conveyance, and Offline S.M.A.R.T Tests

Short Test: runsThis test is a short,quick basiccheck SMARTof the hard drive's overall health. It typically takes only a few minutes to complete and is designed to detect major issues with the drive. It's a good idea to run a short test onregularly theto disks.catch Iany generallypotential scheduleissues Short Tests twice a month.early.

Long Test: takesThis test is a whilemore comprehensive check of the hard drive's health. It scans the entire drive for any bad sectors or other issues that may affect its performance. A long test can take several hours to complete, depending on the disksize size. I usually run Long Tests once a month, in betweenof the Short Tests.drive.

Conveyance Test: identifiesThis damagestest incurredis duringsimilar to a long test but focuses specifically on the drive's mechanical components, such as the head and spindle. It is designed to detect any problems with these components that may cause the drive transportation. Generally not needed to be run on a schedule.fail.

Offline Test: TestThis willtest takeis similar to a long test but is performed when the drivesdrive temporaryis not actively in use. It is typically run during boot-up or when the drive is otherwise idle. An offline fromtest theis Poolmore andthorough runthan thea SMARTshort teststest onbut it.less intensive than a long test.

Give the task a description, and then select schedule to customize when you want the SMART task to run.

Enter the hour you want the task to run at. Overnight is generally a good time to run tasks. 

Under Days, you can enter the calendar dates to make the task run more than once a month. I enter two calendar dates in order to set the Task to run twice a month.

Click Submit to finalize the task.

Once done, you will now see the new task. 

That's it! The SMART task will now run at the specified interval and test the selected disks for any potential issues. If any issues are detected, you will receive an email report (if configured) and can take appropriate action.