Robert, > I have a few hardkernels and I was the one that got Centos-arm working on them and booting completely off the HD. > Problem comes back to it is ARM. > I have their Odroid HC4 for doing RAID, but could not get any Linux but theirs installed. The HC4 should be running with https://www.armbian.com/odroid-hc4/, although this would be Debian based. > And as I mentioned, iRedMail does not support ARM. > So I am looking for something x64ish. the H3+, just like the complete "H" series is Intel based. The H3+ uses a "Intel(R) Pentium(R) Silver N6005" CPU. I have it running with RHEL9 Michael