thanks cheryl, sorry i couldnt get into the forum on friday.
if we use 2TB as the drive sizes, that probably works out like this:
2TB x4 drives = 8TB max capacity
8TB -2TB (for Single Drive Redundancy SDR) = 6TB actual capacity
(its actually a bit less, as the drobo uses a bit for filesystem overhead, and you also only had about 70% used, but under usual circumstances, it probably would have needed about 5 days)
if it is still flashing those lights, and you can wait a little bit more say another couple of days please if you can…
and in case you can not wait anymore, can you try exiting dashboard, and restarting dashboard to see if dashboard can find it again.
and then if not found, can you try shutting down the computer and when that has fully shut down, to wait about 5 minutes to see if the drobo still continues doing what it is doing, and if it does continue, can you then please remove the data connection cable from the mac and drobo.
If the drobo does stop, (or if the drobo does not stop what it is doing), then you could try to power it off, and to wait 5 minutes, and then to turn it back on again to see what it does…
for example, does it boot up as normal (with the blue led lights lighting up from 1 through to 10 (usually filling up from right to left) and then does the drobo go into standby mode, (since it is not connected to a computer) or does it continue doing its Red and Green flashing?