====== FreeNAS ======

  * https://www.ixsystems.com/community/threads/backup-usb.21961/
  * https://www.ixsystems.com/community/threads/recover-from-usb-boot-drive-failure.68300/
  * https://www.ixsystems.com/community/threads/how-do-i-move-my-usb-image-to-another-usb-drive.16101/