I'm looking to upgrade my storage to transfer my iTunes library from my 1-TB internal drive to an external drive that will accommodate rips from 1,000 or more DVDs and Blu-Rays. For ripping and encoding, I'm using the automated process in the thread at the top of this forum. I figure I'll need at least 4 TB of capacity, perhaps more, just for Handbrake encodes. If I want to save the full-DVD and Blu-Ray backups, I'll need significantly more. Also, I want to make sure I have sufficient capacity for a Time Machine back-up of my internal drive and the iTunes library on the external drive. I've read a few things about RAID and Drobo here, but I'm still not clear on what the pros and cons are. I haven't considered other options besides those but would like to hear if anyone has any other suggestions. Any advice would be greatly appreciated. Thanks in advance.