I'm working on building a HTPC. I have two 1TB drives that I'd like to combine. I'm thinking about using Ubuntu 10.04. From what I've read I want to use RAID or LVM. I'd prefer to use RAID0 since I'd rather have capacity over redundancy. Problem is I can't find any good tutorials on how how to set this up. Any recommendations or good guides on how to go about doing this? Also, I'd like to be able to add more drives to the array down the road.
RAID0 is great for speed, but if all you want is space, then it's not needed and totally redundant and your LVM would be doing exactly the same thing.
Don't install the OS to the big LVM. It's not needed. Partition 100GB or so for the OS and install Ubuntu to that. Then partition the rest along with the other storage drives, and combine them into one big LVM. Then use that as the location to store your video files.