Question – X-99 MB suggestion

Thanks, I would like to have a an active conversation, perhaps it may gives me an idea, which I may not have thought about it.
The reason I want SAS, because I have noticed SAS storage devices are dirt cheap compare to SATA drives.
I am making a LAB, so storage, Memory, Cpu core comes in a play, I can launch lot of environment simultaneously.
I have noticed Dual Socket CPU MB have Intel C612 as X99 is not common ? But for Single Socket MB they are bunch.
I have also come across, Some MB vendor requires to use ECC and non ECC will not work.
Thanks for letting me know Gigabyte, Asrock are in a play