Mirroring the FreeNAS USB Boot Device - briancmoses.com
Low End Tech - USB Flash Drive Raid Array using Raspberry PI 2 - YouTube
RAID - adding disks to a Pi
The Well-Tempered Computer
Use A bunch Of USB Flash Drives In A RAID Array - Bobby Owsinski's Music Production Blog
ZFS thumb drive RAID - YouTube
Running A Btrfs RAID Array Across Four USB 3.0 Flash Drives Review - Phoronix
HPE Flash USB Drives | HPE Store US
Is using USB flash drives in a RAID setup an efficient alternative for external storage? - Quora
Shop | 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