Just a point of clarification: Don’t use RAID 5 for more than 2-4 TB. The rebuild takes so long that the mean-time-between read errors statistic basically guarantees a read error while rebuilding, which may cause the controller to trash the array.

That and rebuilding that much data might push one of the drives over the edge anyway.

One thing that people miss - either out of ignorance, or because it goes against the narrative - is that systemd is modular.

One part handles init and services (and related things like mounts and sockets, because it makes sense to do that), one handles user sessions (logind), one handles logging (journald), one handles networking (networkd) etc etc.

You don’t have to use networkd, or their efi bootloader, or their kernel install tool, or the other hostname/name resolution/userdb/tmpfiles etc etc tools.