So I replaced the 320GB drives in my RAID and backed up everything to the old drives as I pulled them out 1 at a time (aka, all my data is on the old RAID drives). I setup the RAID (with the new 1TB drives) and am transfering files back onto it with the old drives sitting next to my case and plugged in internally (SATA-II). The drives are transfering really slow and are slow when browsing within them (not as slow when browsing as the read is, the writing isn't too bad either). I am running Windows XP SP3 and don't have much else installed right now (I reformatted/reloaded Windows as well) so its pretty much a fresh install. My OS is not on the RAID but a separate drive and it seems fine. Anyone have any ideas why its transfering so slow? What all would cause an internal drive to run slow? I didn't check for new drivers but used the ones I used before. I suppose I can check to see if there is a new SATA controller driver but doubt thats the issue.