TrueNAS SCALETrueNAS SCALE Nightly Development Documentation
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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.

Devices Data VDEV Unexpanded
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.

Devices Mirror VDEV Expanded
Figure 2: Devices Mirror VDEV Expanded

Click anywhere on a drive to see the drive widgets.

Add VDEV opens the Add a VDEVs to Pool screen with the Pool Creation Wizard for the selected pool. For example, find the Topology widget for a pool and click Manage Devices. This opens the Pool Creation Wizard with tank prepopulated but not editable.

ZFS Info Widget (VDEV)

The ZFS Info widget for the VDEV shows a count of read, write, and checksum errors for that VDEV, and the Extend and Remove options.

Devices Details for Mirror ZFS Info Widget
Figure 3: Devices Details for Mirror ZFS Info Widget

Extend opens the Extend VDEV dialog where you select a disk from the New Disk dropdown to add a new disk to the VDEV.

Devices Extend VDEV Dialog
Figure 4: Devices Extend VDEV Dialog

Remove opens the Remove device dialog where you confirm you want to remove the selected VDEV. To remove a drive from the VDEV, select the drive then select Detach on the ZFS Info widget to remove the drive from the VDEV (pool).

Disk Widgets

Each disk in a VDEV has a set of four widgets that show information for that disk. After selecting a disk, the widgets display on the right side of the screen in the Details for diskname area of the screen.

Devices Disk Widgets
Figure 5: Devices Disk Widgets

ZFS Info Widget (Drives)

The ZFS Info widget for each device (disk drive) in the VDEV shows the name of the VDEV (Parent) the read, write, and checksum errors for that drive, and the Detach and Offline options.

Devices Disk ZFS Info Widget
Figure 6: Devices Disk ZFS Info Widget

Detach opens a confirmation dialog and removes the selected drive from the parent VDEV.

Devices Disk Detach Dialog
Figure 7: Devices Disk Detach Dialog

Offline opens a confirmation dialog and takes the selected drive to an offline state. After taking a drive offline you can remove or replace the physical drive.

Devices Disk Offline Dialog
Figure 8: Devices Disk Offline Dialog

Hardware Disk Encryption Widget

The Hardware Disk Encryption widget shows information on the drive SED password status (set, not set).

The Manage SED Password link opens a Manage SED Password dialog where you enter an SED password for the drive to set the disk encryption password.

Devices Disk Hardware Disk Encryption Widget
Figure 9: Devices Disk Hardware Disk Encryption Widget
Manage Disk SED Encryption Password
Figure 10: Manage Disk SED Encryption Password

Global SED Password shows the status as set or not set. The Manage Global SED Password link opens the System Settings > Advanced screen where you can change the global SED password that overrides the disk passwords.

S.M.A.R.T. Info for Devicename Widget

The **S.M.A.R.T. Info for devicename widget, where devicename is the name of the disk, provides the number of Completed S.M.A.R.T. Tests and the number of S.M.A.R.T. Tests configured on the system.

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The Manage SMART Tasks link opens the Data Protection > SMART Tests details screen where you find the list of SMART tests configured on your system. Run Manual Test opens the Manual S.M.A.R.T. Test dialog if the disk is compatible with SMART tests or opens an information dialog if it is not.

The Type dropdown list includes the LONG, SHORT, CONVEYANCE, and OFFLINE options, and the Cancel and Start buttons.

Disk Info Widget

The Disk Info widget shows the Disk Size, Transfer Mode, the Serial and Model numbers for the drive, the Type of drive it is, the HDD Standby setting, and any Description associated with the selected drive.

Devices Disk Info Widget
Figure 14: Devices Disk Info Widget

Replace opens the Replacing disk diskname dialog, where diskname is the name of the selected disk.

Replacing Disk Dialog
Figure 15: Replacing Disk Dialog

Select the new disk for the pool from the Member Disk dropdown list. The system prevents losing existing data by stopping the add operation for the new disk if the disk is already in use or has partitions present.

Force overrides the safety check and adds the disk to the pool. Selecting this option erases any data stored on the disk!

Replace Disk adds the new disk to the pool.