I just bought the simplest, 4-bay Drobo. Very exciting. I’ve heard some horror stories, but I’ve also heard many success stories. I bought (4) 2TB SATA drives to use with it, and I popped them all in and everything is good so far. With the Drobo I was hoping to get maximum redundancy, so basically 2TB with all four disks mirroring, or maybe 4TB as a RAID1+0. Sadly this is not an option for me and if I slide the initial formatter to 4TB it says it will make two volumes because I will have additional capacity.
So since it wouldn’t let me try 6TB, I had to go 8TB. Under this, I have 5.44TB of capacity and 1.83TB “for protection”. I don’t know how it does that, but I’ll live on a prayer here. Also, the volume says it has over 8TB available, but the dashboard software clearly says 5.44TB. Not sure about that one.
But my biggest question is: can I configure this thing to do MORE redundancy? I see the Pro has a Dual Disk Redundancy option, but I don’t think the standard Drobo does. (dunno why, it’s clearly a software feature)