Hi, After following Glider's rather excellent server guides last year (and continually asking him questions ever since ) I have a very solid and nippy little fileserver. The touble lies in the word, "little". I only have an 80GB drive in there (it was initially just 'an experiment' you see) and desperately need more space. The old mobo in there has 3 spare SATA ports, so I was considering adding an additional 3 x 500GiB drives in software RAID 5 (whilst leaving the boot drive as it is). As I understand it, that will give me 1TB of 'useable' storage on the 3 drives (with 500GB reserved for parity). I found this guide which makes it all look fairly straight forward and I'm sure I'll be able to follow it. However, I do have some questions (some may make you laugh) about the procedure and software RAID in general: 1. How would I know if a drive had failed (and hence needed replacing & rebuilding) in a headless fileserver? 2. How would I identify which drive physically needed replacing when a problem occured? 3. Is a 3.06Ghz pentium 3 with 1GB of RAM gonna hack it?