Support for VIA 6421

[mason]

I pretty maxed out my configuration with a ASUS PQ5 7xSATA, with 2 Adaptec PCIX  4xSATA Controllers and 15 discs.

 

Now i would like to add a VIA 6421 PCI 2xSATA controller i have laying around to use the last 2 slots available, can anyone tell me if the controller is supported by unraid? Also do i have to expect permormance increse with the PCI controller?

 

Thanks in advance ...