Wow, thanks for the detailed answer cluberti. Well, I have 4 gigs of ram. I never knew that all files in the pagefile were only 4K each! That's news to me. I did hear that it runs in 4k streams.. But didn't quite understand that till now. That's a bummer that RAID0 has no effect on paging. And since the files are 4k in size, and i believe the lowest stripe width is 4k (?) - it makes no difference huh. So if, for example - the stripe width can be 2k, then it should benefit? Thanks again for the informative response