You have SATA or SAS to pick from. The CPU requirements for a storage server are not high. On a typical ATX board you have motherboard SATA and can put SAS controllers in the spare PCIe slots.
My first "NAS" was two 22TB hard drives in a ZFS pool on my motherboard SATA
no. just sata & sas. There is no nvme spinning drive and flash loses bits just from sitting, it's not archival. flash is good for working not for storing.
This is true, but if you use a file system that does scrubs (and you should use such a file system for a NAS), and if you keep the NAS on 24*7, this won’t be an issue.
It was €329 per hard drive (through a reputable store), and I chose the ASRock B650M-HDV/M.2 mATX motherboard combined with a Ryzen 5 8500G. Stock CPU cooler, replaced the Jonsbo case fans with Arctic P12 Pro PST LN. I only slightly regret the PSU (MSI MAG A650GL), which could be quieter. Not that it's very noisy, and it's a great PSU otherwise, but I should've chosen one that just shuts the fan down at low power usage.
