Hey all, I posted a question on Apple's forum and got no response. Figured i'd throw my plan out on here and see what you guys think. I have an iMac 24" with 2.4ghz and firewire 800. I have been accumulating a great deal of tv shows and movies lately and need to expand and at the same time create some redundancy in case something goes wrong. I looked all over for NAS systems with something other than esata output and the only thing I found was the Drobo. Arguably highly overpriced, plus I have to add my own drives, I started thinking. Western Digital makes the Studio My Books, with quad interfacing and dual drives, which can mirror each other. Selling for $238 on amazon, I ordered two and my plan is to set the external drives up in raid 1, mirror and then software strip, raid 0 them with disk utility in the Os. Since there is no esata output on my imac, there is no way to use anything else but usb and firewire. The Studio editions come with built in firewire 800, something pretty much niltch on NAS systems, yet the fastest current connection on my iMac. Here is the kicker, and I have confirmed this with Western Digital, the hard drives are upgradable, where in the future I can swap out the drives one at a time and at more space without hindering the raid. So when the 2tb HDs come down in price, I may be inclined to upgrade. Also, since these do have esata, I am setup for future connection possibilities if Apple ever adds esata to the imac line or I get a mac pro. When it comes to networking and playing my content on other machines in my home, particularly on my HTPC, I just map the drive over the network and just need to make sure the iMac is turned on, saving a lot of money for an issue of convenience. True it is sweet to have a NAS setup, but the drobo is $350 and then the drives would probably be about $90, which is over $700 already, the Western Digitals straight up with free shipping came to $476. Plus I hear the drobo has some issues to work out, not something I want to risk. I have had great luck with WD, I have a 1 tb my book premium ii right now. What do you all think? Thanks!