Apple Thoughts: Helping Time Machine and Drobo Get Along

"A few days ago I reformatted my Drobo because it was acting up. I believe this was due to a system reinstall and not the fault of the Drobo. Prior to reinstalling I was made aware of the fact that the Drobo, like virtually all expandable mass-storage devices, "lies" to the computer about its disk size. This "lie" is beneficial if you plan to expand the size of your disk drives. It leaves "room to grow." The "lie" is a horrible one, however, for Time Machine, which prunes its backups automatically when a disk is full."

I'm glad someone worked this out, actually. Time Machine is great, but can be a real resource hog when it comes to hard disk space. This is probably going to be next weekend's project for me. I totally love my Drobo and I'm glad someone worked this out. Alternatively, there's an app you can load into the Drobo called Time Tamer. It's available here and it's totally free.