I have to build a file server for some clients of mine. It's more of a document server than a multimedia server. They just need 24-7 access to word, excel, etc files and also I will set all the computers to backup to this server. I know I will need a raid 1 but I don't know how much memory it needs. Will 512MB do it or should I go with 2Gigs? I have 512Megs or RAM lying around. So should I use that and save money or should I buy 2gigs? Thanks.