Parity and cache on separate controller?

[outsider]

In the new UnRaid install I'm building, I was wondering of two things:

1. Should I plug the parity drive on a separate SATA controller? (My motherboard has two distinct SATA controllers)

2. Does it make a diference which SATA controller the Cache drive is attached to? Should it be attached to the same controller as the Parity drive, or to the controller that manages the individual drives?

 

Thanks.

[Zonediver]

My recommendation (from my experience) is to attach both to the Mainboard.

SATA 6Gb/s Port for the Cache-Drive, if your Cache is a SSD.

The parity drive can also be connected to a SATA 3Gb/s port because the throughput is not that much (max. 220MB/s @ a fast HDD).

PCIe controllers have sometimes bottlenecks with more than one HDD attached.

And "never" connect it to a PCI-Controller, but i think, thats clear why