Currently Being ModeratedJan 26, 2012 4:19 PM (in response to rocklebee)
You really should direct this to the folks at Drobo.
A wild guess, however, is that the Drobo may be counting in decimal (where a KB is 1000 bytes), while OSX is counting in binary (where a KB is 1024 bytes).
Another guess is, the Drobo may use a different block size, so some files (especially very small ones) will require fewer blocks.
Currently Being ModeratedJan 26, 2012 6:09 PM (in response to Pondini)
Good points. Thanks.
I wonder if it's enough to account for the size of the discrepancy.