Thanks TwinTiger -
I think we’re getting there. In my case, my B800fs is currently loaded with 8,6,8,6,6,8,4,8 TB drives. According to drobo dash, I have 33.81 TB of space. I believe that this is using hard drive manufacturer math, so it’s really about 93% of that which is 31.44 TB… I’m guessing that this is why I’m getting the amber light. If I swap the 4TB drive for a 6 TB drive, that should push me over 32 TB… which should mean I’m maxxed out. I’m hoping that means no more amber light - I just find it annoying… but it’ll be a $200 gamble to find out.
The $200 question is: were the Drobo software engineers smart enough to think of the edge case conditions. If they did, there should be no more amber light once you hit the max theoretical storage capacity for the device because you can’t fix the amber condition. In other words, once you’re at max - adding bigger drives doesn’t give you more space so you’re still at 85%+ capacity… so it would be nice if the device was smart enough not to bug you about it.
The reason I’m sticking with 32 is because Drobo states that the B800fs has a 32 TB storage limit which is done through two 16 TB volumes. Supposedly, there is no going bigger than the storage limit or the volume limit which means no 3rd volume. See:
Keep in mind the B800fs is a NAS, so the whole thing is done through thin provision - I don’t get to select the volume size. It automatically creates them at 16 TB.
I tried contacting support but they just quoted me the capacity limit on that page - which I really knew. They didn’t actually try to answer the actual question.