Probably not the correct thread. Maybe a mod will relocate it?
but to go down the rabbit hole.
supports or will work? two different things.
While HPE periodically does stupid drain-bamaged things I'd be shocked if 1.2TB was the limit that worked.
Please use SSD's for the boot drives and if you do any sort of VM's / LXC / Dockers then SSD storage for that too.
I think the best you may be able to do with SFF spinning rust are 1.9 or 2.4TB drives. This will be a bit cheaper in the short term than equivalent sized SSD's. But reliable? with that many ? IDK I think you'd want to run raid 6 or ZFS R2 with spinning rust. I'd be okay with Raid 5 or ZFS R1 with SSD.
Actually a quick bay price check says 2.4TB 2.5 SAS spinners are about the same price as 1.92TB sata SSD's.
A better question is what is your use case for the system?
Home NAS? Virtualization? Something to mess around with? What OS / Platform are you planning to run?
If you wanted to spend the coin, 10+ 15.36TB SAS SSD's would be pretty juicy if you wanted a lot of fast storage in the chassis.
What's the SAS controller? Do you have or want Hardware or Software Raid (which may be dictated by the use case & OS / Platform)?
so many more questions and hopefully food for thought for you