We have 2 disks mirrored using raid0 and the 3rd disk separate as we're not concerned if we lose the cache. We are only using 11gb of the 3rd disk which has proved ample for our purposes (approx. 70% being used at present). ------------------------------------------------ Hi, How did you configure the 3 disks for squid? Chris ------------------------------------------------ I hope no-one minds me posting this to the forum, but if anyone is interested I've setup an unofficial SmartFilter forum at http://s2.phpbbforfree.com/forums/?mforum=smartfilter for other users of this content filter software. It's empty so feel free to register and share knowledge etc. Thanks to Kevin for his input.