Hi! This seems to be a good spot to ask questions. Greetings Experts! First some background: I need to get one or two extra harddrives for my system. My 14 months old IBM deskstar 80 gig is "clicking" now and then, and it continues to do so despite the installation of an extra dual fan HDD cooler ( that lowers the temp to approx. 29 C) OK, now to the point! I am a power user. I let my computer run pretty much 24/7. I do this because I have a cable broadband connection, and need to make use of it to justify the high cost. So... therefore I am running my favourite p2p programme night and day. That would mean that the computer mainly runs as a server. As the crappy IBM hdd started to click after only 3 weeks of 24/7 usage (I have had cooling for 2 weeks now), I figure that I will be better off with another brand. My motherboard supports RAID 0, and since I have heard many good things about RAID, I think it might be a good idea to try it. Question 1: Am I really better off with two 80 gig harddrives configured as a 0 level raid than I would be if I chose a single 160 gig harddrive. Performance-wise, that is. Question 2: Should I choose ata 100 or ata 133? I have looked around the internet, and some people claim that the differences are insignificant. Are these claims true? Is there any significant difference when it comes to 0 level RAID? Question 3: I am currently considering two options, if you recommend me to go ahead with RAID. One option is to buy two WD Caviar XL 80 HDDs. The pros of this choice seem to be that it has a cache of 8mb, and that it offers a 3 year warranty. The con may be that it "only" offers ata100 Another option is to buy two maxtor diamond plus 9. The pros of this choice seem to be that it offers ata 133 together with an 8mb cache. The con seems to be the 1 year warranty that makes me suspect that the quality of this HDD is lower than that of the WD caviar. I don't want another drive clicking after 3 weeks use. Qustion 4: Are the above mentioned HDDs suitable for "server-like" usage? Of course I will install HDD coolers if needed. Over to you! What do you think? Any ideas or suggestions? Thanks for reading my post. Depending on when you read this, I will take this opportunity to wish you all the best for the new year!