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.
Performing Manual S.M.A.R.T. Testing 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.
Figure 1: Disks Screen 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.
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.
Figure 1: Devices Data VDEV Unexpanded Click anywhere on the VDEV to see the drives included in it, and the ZFS Info widget for that VDEV.
Figure 2: Devices Mirror VDEV Expanded Click anywhere on a drive to see the drive widgets.
S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) is an industry standard for disk monitoring and testing. Disks are monitored for problems using several different kinds of self-tests. TrueNAS can adjust when and how alerts for S.M.A.R.T. are issued. When S.M.A.R.T. monitoring reports an 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.
S.M.A.R.T. tests run on a disk.
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 Settings > Services > and click the blue toggle button 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 reboots.
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.
Name Description Disks Select the disks to monitor from the dropdown list. All Disks Select to monitor every disk on the system with S.M.A.R.T. enabled. Leave clear to choose individual disks on the Disks dropdown list to include in the test. Type Select the test type from the dropdown list. Options are LONG, SHORT, CONVEYANCE or OFFLINE. See smartctl(8) for descriptions of each type. Some types degrade performance or take disks offline.
The SCALE CLI guide is a work in progress! New namespace and command documentation is continually added and maintained, so check back here often to see what is new!
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.
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.
S.M.A.R.T. Tests Task Widget 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.
After adding tests, each becomes a link to open the Edit S.M.A.R.T. Tests screen.
Click on S.M.A.R.T. Tests widget header to open the S.M.A.R.T. Tests list screen.
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