DROBO 5N2 5-BAY NAS STORAGE ARRAY, 1GBB GIGABIT ETHERNET

Details

Built on award-winning BeyondRAID technology with single- or dual-drive redundancy, Drobo 5N protects your data without any user interaction, even in the event of multiple drive failures.
Drives can be added or hot-swapped on-the-fly for storage expansion with zero downtime. If you're running low on space, the lights on the front tell you what to do. Just add a drive in an empty bay or remove a smaller drive and replace it with a larger one.