Build a multi-drive NAS with Raspberry Pi 4 and several USB drives In the back of my mind is the question of replacing my Drobo NAS with something more modern. I've had it for about 10 years and surely it's time to replace it. An idea that bounced around recently is a Raspberry Pi 4 with a cluster of USB drives. For example 4 terabyte external portable drives are less than $100 apiece, and would be a small low power disk storage solution. The question is whether a Raspberry Pi is the best file server choice, and whether to leave the drives connected and spinning all day long.

Helios4 ARM-based Linux SBC DIY NAS with 4 SATA ports The Helios4 is an open source NAS system based on a dual-core ARM Cortex-A9 CPU that includes 4 SATA3 ports. Because the board includes SATA ports, the hard drives run at full speed giving better NAS performance. The system runs operating system distributions based on either FreeBSD or Linux, which of course includes NAS systems like Open Media Vault. Finally, a single-board-computer with which to build a low cost low energy consumption do-it-yourself NAS system.

Network Attached or Direct Attach Storage