The current Drobo Product line is compatible with MacOS Sierra.
The current Drobo Product line includes the following products: http://www.drobo.com/storage-products/
NOTE: ISCSI products will require an updated image from ATTO: https://myproducts.drobo.com/article/AA-01921
We recently combined the Drobo Support Site and the Drobopace Forum into a single Drobo account. These improvements will also allow customers who own both Drobo and Transporter products to get support with the same login. Create an account to give you access to these services: