I am about to purchase a new iMac with a 1 TB Fusion Drive, and I am trying to layout my backup gameplan to purchase any necessary drives/enclosures. The iMac will be my primary computer, but I also have two older Windows laptops that will be used sparingly (probably no need for backup). I plan to purchase some streaming boxes/sticks (Roku?) in the near future. The drives I currently own are a 1 TB WD My Book NAS connected to my router and a 1 TB WD My Passport USB drive. My plan was to have a 2 TB drive always connected for Time Machine backups. An additional drive will be used for cloning using either CCC or SuperDuper. I may add an additional layer of protection with some form of cloud storage in the future. My plan was to use the WD NAS for duplicate storage/common access/streaming of photos, videos, and music. I did have some additional questions: Pre-built or DIY? 3.5" or 2.5"? Should I use two drives for both TM and clone and rotate? What storage size would be best for the clone drive? Should I leave the clone backup drive always connected or not? Does this seem like a solid plan? What am I missing?