2020-05-26: This guide is now updated to reflect some bug fixes and changes in mdadm and Samba. Introduction Today I'll show you how to build a Raspberry Pi 3/4 RAID NAS server using USB flash drives and the Linux native RAID application mdadm, along with SAMBA so the drive will show up as a normal network folder on Windows PC's. It's an intermediate tutorial and shows you how to create a Linux RAID array which is a good skill to … [Read more...] about Build a Raspberry Pi RAID NAS Server – [UPDATED 2020]