Setting up a new server; the motherboard is a Supermicro X10SRW-F.
It has two SATA controllers, one with 6 ports, one with 4.
The one with 6 ports already has a DVD drive connected to it.
I'm about to use 4 x 512GB SSD drives in a RAID 10 array, and I have a choice of which controller to attach the drives to. The BIOS options look identical.
The server came prebuilt, with all the SATA cables connected to the back of the drive caddies; they're all tied up with cable ties and I don't want to get into rerouting them. Therefore the choice of which drives to attach to which controller is simply a choice of which bays to plug them into.
If I attach them to the 6-port controller, the one that already has the DVD drive attached, it happens to give me a logical SATA0 - SATA3 in left to right order, which will minimise the risk of pulling out the wrong drive accidentally later on.
Is there a downside to this? I seem to remember from the distant past that a CD drive on the same IDE cable as a HDD was a Bad Idea - surely there's no such limitation now with SATA?
All 10 SATA ports are SATA3.
According to the manual, the 6 port controller is supported by the Intel PCH chip. The 4 port one is supported by the Intel SCU chip. I don't really understand the significance of this difference.