The Pool Creation Wizard configuration screens include a configuration preview and an inventory list of disks available on the system.
Create Pool at the top right of the Storage Dashboard screen opens the Pool Creation Wizard.
Figure 1: Pool Creation Wizard Configuration Preview displays a list of pool and VDEV settings that dynamically update as you configure settings in the wizard.
Inventory displays the number of available disks by size on the system, and this list dynamically updates as disks move to VDEVs added in the wizard.
Over-provisioning SLOG SSDs is useful for different scenarios. The most useful benefit of over-provisioning is greatly extending SSD life. Over-provisioning an SSD distributes the total number of writes and erases across more flash blocks on the drive.
Seagate provides a thoughtful investigation into over-provisioning SSDs here: https://www.seagate.com/blog/ssd-over-provisioning-benefits-master-ti/.
For more general information on SLOG disks, see SLOG Devices.
Some SATA devices are limited to one resize per power cycle. Some BIOS can block resize during boot and require a live power cycle.
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.
Use the Storage > Disks screen to add or manage disks in your TrueNAS.
Use the blue Columns button to display a list of options to modify the information displayed in the list of disks.
Use the arrow_forward_ios expand symbol to the right of any disk on the list to expand that disk to show settings and actions for that disk.
Disk Information Screen The Disks individual disk information screen includes details about the disk settings and status.
The Storage Dashboard widgets provide access to pool management options to keep the pool and disks healthy, upgrade pools and VDEVs, open datasets, snapshots, data protection screens, and manage S.M.A.R.T. tests. This article provides instructions on pool management functions available in the SCALE UI.
Figure 1: Storage Dashboard with Pool Setting Up Auto TRIM Select Storage on the main navigation panel to open the Storage Dashboard. Locate the ZFS Health widget for the pool, then click the Edit Auto TRIM.
Supported Specifications Legacy interface for older ATA devices (Not recommended for security-critical environments!) TCG Opal 1 legacy specification TCG OPAL 2 standard for newer consumer-grade devices TCG Opalite which is a reduced form of OPAL 2 TCG Pyrite Version 1 and Version 2 are similar to Opalite, but with hardware encryption removed Pyrite provides a logical equivalent of the legacy ATA security for non-ATA devices. Only the drive firmware protects the device.
Advanced settings have reasonable defaults in place. A warning message displays for some settings advising of the dangers of making changes. Changing advanced settings can be dangerous when done incorrectly. Use caution before saving changes.
Make sure you are comfortable with ZFS, Linux, and system configuration, backup, and restoration before making any changes.
The Self-Encrypting Drive(s) widget on the System > Advanced screen allows you set the user and global SED password in SCALE.
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.
TrueNAS Enterprise The View Enclosure screen only displays on TrueNAS SCALE Enterprise systems with compatible hardware. The UI options to select System Settings > Enclosure is not present on incompatible non-Enterprise systems. The System Information widget on the main Dashboard displays an image of the specific TrueNAS system. Hover the mouse over the image to see the View Enclosure label. Click anywhere on the system image to open the View Enclosure screen.
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