TrueNAS Enterprise

This feature is only available on TrueNAS Enterprise systems.

Storage Tiering is an Enterprise feature that operates as a share-level toggle that lets admin users decide whether to write data to flash performance tiers or regular HDD tiers within a fusion pool at any time.

The Storage Dashboard widgets provide enhanced storage provisioning capabilities and access to pool management options to keep the pool and disks healthy, upgrade pools and VDEVs, open datasets, snapshots, and data protection screens. This article provides instructions on pool management functions available in the TrueNAS UI.

Select Storage on the main navigation panel to open the Storage Dashboard. To see if the AutoTRIM function is enabled, locate the Storage Health widget for the pool.

Now that you are logged in to the web interface, it is time to set up TrueNAS storage. These instructions describe a simple mirrored pool setup, where half the selected disks are used for storage and the other half for data protection. However, there are many configuration possibilities for your storage environment!

You can read more about these options in Creating Storage Pools. You can also use the ZFS Capacity Calculator and ZFS Capacity Graph to compare configuration options.

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 the information displayed. Options are Select All, Name, 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, and Reset to Defaults. Each option displays the information you enter in the Edit Disk screen or when you install the disk.

Datasets, root, non-root parent, and child, or zvols with encryption include the Encryption widget in the set of dataset widgets shown on the Datasets screen.

The Datasets tree table includes lock icons and descriptions that indicate the encryption state of datasets.

Icon	State	Description
	Locked	Displays for locked encrypted root, non-root parent and child datasets.
	Unlocked	Displays for unlocked encrypted root, non-root parent and child datasets.
	Locked by ancestor	Displays for locked datasets that inherit encryption properties from the parent.
	Unlocked by ancestor	Displays for unlocked datasets that inherit encryption properties from the parent.

The Encryption option on the Pool Manager screen sets encryption for the entire pool.

This tutorial covers migrating data and configuration from one local pool to another on a TrueNAS storage appliance. Migrating is helpful if, for example, when you have two local pools (Pool A and Pool B) and want to consolidate them by moving data and shares from Pool B to Pool A. You can then destroy Pool B and repurpose its drives.

The Snapshots screen lists dataset snapshots on the system. It allows you to add new or manage existing snapshots.

Access to the Snapshots screen is available using the Manage Snapshots link on the Data Protection widget on the Datasets screen and by clicking Snapshots on the Periodic Snapshot Tasks widget on the Data Protection screen.

If the selected dataset does not have snapshots, the screen displays No Snapshots are Available.

The Storage Dashboard screen allows users to configure and manage storage resources such as pools (VDEVs) and disks. The dashboard widgets organize functions related to storage resources.

The No Pools screen displays before you add the first pool.

The zvol screens and widgets, accessed from the Datasets screen, allow you to add or edit a zvol and manage the volume storage. Zvols are listed on the Datasets screen tree table.

The dataset tree table shows storage space used and available for that zvol (or dataset), encryption status (locked, unlocked, or unencrypted), and how that zvol or dataset is used (i.e., the system dataset, a share, virtual machine, or application).

TrueNAS Enterprise

Storage Tiering is only available on TrueNAS Enterprise systems.

This tutorial covers using the ZFS storage tiering feature introduced in TrueNAS 26 to migrate a TrueNAS Enterprise storage appliance from a two-pool configuration (for example, an HDD pool with a mirrored special vdev and a separate SSD pool) to a single tiered pool.