install freenas on iomega storcenter ix2

The Espressobin is supported by OpenWrt if you so prefer while NanoPi M4 using the SoC RK3399 isn't supported for now at least by OpenWrt. In terms of price / performance your probably best off looking at the Espressobin or + the SATA HAT although neither have a nice case. Finding a cheap/relatively cheap NAS-like device with decent hardware is next to impossible and even hardware if you want something supported out of the box. Honestly I think you're going to spend more time than what it's worth on this project. What you also should have in mind is that ARMv5 is very old hardware by now and I wouldn't be surprised if support upstream (Linux kernel etc) will remove support soon especially as GCC 9 dropped support for ARMv5.

NFS(v3) should on the other hand perform quite well despite the aging hardware but don't expect any speed records. Based on enterprise-class EMC ® storage technology, the Iomega ® StorCenter ix2-200 provides easy file sharing, iSCSI block access, and RAID 1 for optimized data protection.

If you feel a bit adventurous you could try cifsd but I wouldn't trust it yet with my data. Transfer rates will most likely go down at least as far as SMB goes as Samba 4.X is much more computing intensive then Samba 3.X. I just connected an Iomega StorCenter ix2 to my network via my D-Link Dir685 router, installed the Iomega Storage Manager software on my HP Pavilion Elite.

Install freenas on iomega storcenter ix2