Asus WS C422 SAGE 10G - U.2-Port to MiniSAS-HD possible ?

[Padi75]

Hi all,

I've found the following mainboard: Asus WS C422 SAGE 10G
It has 8 SATA-ports and two U.2-ports with SFF 8643 connectors.

In two 5.25" slots of the chassis I want to use an ICY DOC bay for up to 8x 2,5" SATA-SSDs.
(ToughArmor MB508SP-B). This bay has 2x miniSAS HD (SFF-8643) ports.

In order to avoid an HBC-Card, I want to put 8x 3,5" HDDs to the 8x SATA-ports and now the big question:
Is it possible to connect the 2x miniSAS HD ports of the ICY DOC backplane to
the 2x U.2 ports of the mainboard?

Physically I think it's not a problem, but can U.2 "understand" the SATA-Drives of the miniSAS HD backplane?
(I know that U.2 can do much more in speed than SATA...)

 

[BlueFox]

No, the U.2 ports support PCIe devices only. You should hook up your hot-swap bays to the SATA ports on the motherboard. You don't need another HBA.

 

[Padi75]

Thanks!
The idea was to put into the 8x SATA-ports 8x normal HDDs and into the 2x U.2-ports the 8x SATA-SSDs via the miniSAS-backplane.

So I think this board is for my needs too expensive...