I have been transcoding my DVD's to MP4 files and putting them on my home network storage. It is only a 2 drive system so I did not use any of the RAID options. I am quickly running out of space however. I have 2 1.5TB drives that format out to 1.34TB's. I want to get a 4 drive system and use some flavor or RAID. But HD prices have kept me from doing it.