Hi Everyone, I started a social networking site and I am getting ready to go live next week. I have limited fund as I am not funded yet (although hopefully soon). I have an extra Mac Pro (I know, how can I possibly call a Mac Pro dual 2.8 quad core with 16gb RAM extra). So Mac Pro quad Core, 16gb RAM, 4 x 1tb RAID level Seagate drives. I was going to load CentOS 5.4 on it, web, mysql etc, etc. This is really the only box I have that would handle the site it it takes off and then I would need to add more hardware and most hosting to RackSpace or something. My question is about initial setup. The 4 x 1TB drives. How to set this up for I have some protection? RAID 0+1? (striped + mirrored) I would end up with 2TB useable space. RAID 5? so what one is a hot spare? 3TB useable space? What about striping the 4 1TB and mirroring that to a 4 x 1tb External drive enclosure? I want to be sure the data is protected, but machine resources and money are limited. Thoughts are appreciated!