ZFS pool importing works for pools that are exported or disconnected from the current system, those created on another system, and for pools you reconnect after reinstalling or upgrading the TrueNAS system.
The import procedure only applies to disks with a ZFS storage pool. Do I need to do anything different with disks installed on a different system? expand When physically installing ZFS pool disks from another system, use the zpool export poolname command in the Linux command line or a web interface equivalent to export the pool on that system.
