The only downside to using the regular M.2 connectionon that mobo is that its bandwidth is shared and SATA ports 5 and 6 then become inactive,
SATA ports? Mine shares PCIe 16 slot 5. The 8 SATAs are unaffected...
Yeah, different manufacturers and different methods, I guess, However, that's the second M.2 port @10Gb/s. The first M.2 port @30Gb/s, which 'll be the one I'd use for the OS, is standalone and shares with nothing, thus leaving the SATA ports and PCIE slots free for other devices...though if I wanted to dual boot, I wouldn't mind sacrificing a couple of SATA ports to add a second M.2 drive. I'd still have 8 SATA ports free... and if I wanted to, I could add another 4 or maybe 8 ports with the PCIE to SATA cards I have.
Thing is, the Level 10 rig only has 8 drives, so that's not necessary. The Cosmos II, however, has two SSD bays and the front plus 13 HDD bays, and I intend to use them all to store all the extended family's photos and videos, my music and personal files, etc... not forgetting, of course, backups of everything. That's where the AsRock X99 Extreme 11 comes in, with its two Ultra M.2 ports, 10 SATA 3 ports and 8 SAS ports., which are backwards compatible with SATA 3.
Yup, so my build has changed some since I first mentioned it, but it was likely to happen, given I have 'til August until all the components are in my possession. Okay, so maybe I'd have gotten there a little quicker had I not spent $210 to upgrade the mobo in the Level 10, but hey, the CPU couldn't perform to its full potential on the X87 board, and simply, that's not acceptable to me.
Besides, I gave up going to the pub, smoking and hookers, so I can treat myself if I like.