I'm giving a new life to an old box and I plan on running a Linux server that will handle general file duties with redundancy. The MB doesn't come with more than 2 SATA 1 ports and they don't support RAID at all.
I was looking around for a hardware RAID expansion card but noticed that the MB also only comes with PCI 5V slot.
Considering (according to Wiki) that the max transfer of the PCI bus is 133 MB/s (~1.06 Gb/s):
Would I be able to effectively run the OS on the main port, and the FS on the RAID array, without capping the speeds, or should I go ahead and upgrade the MB?