[quote=“firstname.lastname@example.org, post:1, topic:140269”]
I have four (4) 3TB drives in a Drobo 5D which, according to the Capacity Calculator, should yield 8.17 TB available for data.
My actual usage is less than 1 TB - mostly for iTunes and RAW images.
According to the Drobo Dashboard, I’m nearly maxed-out with 3 GB left.[/quote]
What exactly does it say about storage usage per drive? In the Capacity tab of your Dashboard, click on the “Usage” button in the top-right corner (the bar chart, not the pie chart). There should be the sentence “How your storage is being used:” followed by “Drives 3TB+3TB+3TB+3TB=12TB(some less actual)”, followed by a graph splitting things up into “Available for data”, “Reserved for expansion” and “Used for protection”. Maybe something in that info helps shedding some light onto the issue.