importance: minor, work-around in place.
When issuing a Mode Sense request (as per DMIP) the response
to the Slot Info query is supposed to have the number of slots as
the first datum returned. On other models of Drobo, this works correctly.
On the Drobo S, it claims to have 8 slots. Naturally, there is only information on 5 slots in the record returned. My application was
adjusted to use output from another mode page.