SanDisk Professional G-RAID 2 8TB 2-Bay RAID Array (2 x 4TB, Thunderbolt 3 / USB 3.2 Gen 1 )
Buffalo Technology HD-WH4TU3R1 hdwh4tu3r1 4tb Drivestation Duo Usb 3.0 2tb Hard Drive Raid Array for $293.99.
StarTech.com Dual-Slot Hard Drive Enclosure for M.2 SATA SSDs - USB 3.1 (10Gbps) - Aluminum - M.2 to SATA - Raid Drive Enclosure (SM22BU31C3R) - flash storage array - SM22BU31C3R
NEVER Use A RAID As Your Backup System!- Pete Marovich Images