I have decided I need to cut the cord with my much beloved Drobos to keep my MacPro operating system current. I will miss them. I purchased a two-bay Yottamaster to back up my MacPro, and it is doing the job very well. I also purchased a five-bay Yottamaster to replace my Drobo 5D, where I keep my Abobe Lightroom catalog which contains 100,000+ images. I plan to copy the images from the Drobo 5D in dual redundancy mode to the Yottamaster using Carbon Copy Cloner in Raid 1. Does anyone have any thoughts/suggestions?