drobo b800fs not showing up during "protect" mode


I am new to the Drobo b800fs, so this might be normal behaviour or something.

I have a Drobo b800fs that was working fine. After adding an extra drive to it in an open slot, it seems to have started to add this drive into the system, drive lights flashing yellow and green.

The problem is the b800fs seems to have now disappeared as the drodo Dashboard can’t find it and it no longer appears on my Mac’s server list. Is this normal?

I thought the b800fs was suppose to still be available during this process.

Any comments/thoughts?