To manage disks, go to Storage and click Disks on the top right of the screen to display the Storage Disks screen.
Select the disk on the list, then select Edit.
The Disks page lets users edit disks, perform manual tests, and view S.M.A.R.T. test results. Users may also delete obsolete data off an unused disk.
Select the disk(s) you want to perform a S.M.A.R.T. test on and click Manual Test.
The Disks screen lists the physical drives (disks) installed in the system. The list includes the names, serial numbers, sizes, and pools for each system disk.
Use the Columns dropdown list to select options to customize disk the information displayed. Options are Select All, Serial (the disk serial number), Disk Size, Pool (where the disk is in use), Disk Type, Description, Model, Transfer Mode, Rotation Rate (RPM), HDD Standby, Adv. Power Management, Enable S.M.A.R.T., S.M.A.R.T. extra options, and Reset to Defaults. Each option displays the information you enter in the Edit Disk screen or when you install the disk.
The Devices screen lists VDEVS and disks configured for the selected pool. Go to Storage and click on Manage Devices on the Topology widget to view the Devices screen.
Click anywhere on the VDEV to see the drives in it and the ZFS Info widget for that VDEV.
Click anywhere on a drive to see the drive widgets.
There is a special consideration when installing TrueNAS in a Virtual Machine (VM), as S.M.A.R.T services monitor actual physical devices, which are abstracted in a VM. After the installation of TrueNAS completes on the VM, go to System > Services and click the blue toggle on the S.M.A.R.T. service to stop the service from running. Clear the Start Automatically checkbox so the service does not automatically start when the system restarts.
Note that the table(s) below can be reorganized by clicking on the column titles. This allows you to reorganize the information in each column by togglnig between a descending and ascending order.
The Services > S.M.A.R.T. screen displays settings to configure when S.M.A.R.T. tests run and when to trigger alert warnings and send emails.
| Name | Description |
|---|---|
| Check Interval | Enter the time in minutes for smartd to wake up and check if any tests are configured to run. |
| Power Mode | Select the power mode from the dropdown list. Options are Never, Sleep, Standby or Idle. S.M.A.R.T. only tests when the Power Mode is Never. |
| Difference | Enter a number of degrees in Celsius. S.M.A.R.T. reports if a drive temperature changes by N degrees Celsius since the last report. |
| Informational | Enter a threshold temperature in Celsius. S.M.A.R.T. sends a message with a LOG_INFO log level if the temperature is above the threshold. |
| Critical | Enter a threshold temperature in Celsius. S.M.A.R.T. sends a message with a LOG_CRIT log level and send an email if the temperature is above the threshold. |
Click Save after changing any settings.
S.M.A.R.T. or Self-Monitoring, Analysis and Reporting Technology is a standard for disk monitoring and testing. You can monitor disks for problems using different kinds of self-tests. TrueNAS can adjust when it issues S.M.A.R.T. alerts. When S.M.A.R.T. monitoring reports a disk issue, we recommend you replace that disk. Most modern ATA, IDE, and SCSI-3 hard drives support S.M.A.R.T. Refer to your respective drive documentation for confirmation.
TrueNAS runs S.M.A.R.T. tests on disks. Running tests can reduce drive performance, so we recommend scheduling tests when the system is in a low-usage state. Avoid scheduling disk-intensive tests at the same time! For example, do not schedule S.M.A.R.T. tests on the same day as a disk scrub or other data protection task.
The Data Protection screen S.M.A.R.T. Tests widget displays the S.M.A.R.T. tests configured on the system and provides access to create or edit S.M.A.R.T. tests.
The S.M.A.R.T. Tests widget displays No S.M.A.R.T. Tests configured when no tests are configured on the system.
