I’m a first time Drobo owner (Drobo S) and it seems to be working fine so far! I have it hooked up to a Mac running Snow Leopard. I have 5.4 TB of usable space (5 x 2 TB, with dual disk redundancy), with a volume size of 2 TB, which means my space is split out into three 2TB volumes.
I found http://support.datarobotics.com/app/answers/detail/a_id/43 which seems to say that there is no way at all to format a Drobo volume as case-sensitive HFS+.
However: My understanding is that aside from the last volume (which is where additional space gets added), nothing really funny is going on and the volumes pretty much show up as normal Firewire storage devices. Actually, now that I’m thinking about it, I may be confused – what I read may have said that it’s the last partition (within a volume) that’s special in that way.
So my question is: What would happen, theoretically, if one were to use Disk Utility to format all but the last volume as HFS+ case sensitive?
I could also do with some more education about how much “magic” is actually going on behind the scenes, really. How much does the Drobo have to understand about the filesystem format that the OS is using? I’m guessing it has to know “enough to be able to look at it and know what’s free space and what isn’t”, because it has to know which blocks actually need to be backed by real storage, and which blocks can be returned to the (Drobo-wide) free pool. Possibly “enough to be able to reorganize all the used space to the beginning”, if it ever needs to shrink something.
Actually, instead of me asking these kinds of questions piecemeal, what would be fantastic is if there is documentation out there that explains some of what’s going on behind the scenes. Is there anything like that?
Thanks!! (And if anyone from Data Robotics is reading this, thanks for a great product!)