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 Test runs a short, basic SMART test on the disks. I generally schedule Short Tests twice a month.

Long Test takes a while to complete, depending on the disk size. I usually run Long Tests once a month, in between the Short Tests.

Conveyance Test identifies damages incurred during drive transportation. Generally not needed to be run on a schedule.

Offline Test will take the drives temporary offline from the Pool and run the SMART tests on it. 

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.