Thin Provisioning Drobo Gen 2

I have an old Drobo Gen2 that I needed to bring back online for some archiving. I have 4 x 3TB drives in it, with 5 x 2TB volumes. I am wondering if there is a way to delete volumes and re-partition them into one large thin provisioned volume. I don’t see any way to alter the partitions in Drobo Dashboard.

Would I need to move all the data oof and then reformat everything to do that? Is that even possible?


Basically, copy data off, factory reset, set up from fresh.
I did that myself to get to a single 16TB partition some while ago, though the pack later got migrated to a 5C, I got tired of USB2 speeds with the Gen 2.