I followed the proc:edure below, but the Drobo Pro continues to go into a reboot cycle:
If you do not want to format your drive set, remove the entire drive set
from the Drobo, keeping the drives in order.
Insert a paper clip into the reset hole on the plastic case to the left of
the USB port on the back of the DroboPro, and hold it in FIRMLY.
While holding the paper clip FIRMLY in the reset hole, toggle ON the power
to the DroboPro.
During this PIN Reset the lights on the DroboPro will do the following:
*** All of the drive lights will light up amber and all of the blue
capacity lights will light up
*** All of the drive lights and all of the blue capacity lights will go
out and only the green power light will still be lit
*** The blue capacity lights will start scrolling up the right-hand side
of the DroboPro
*** All of the blue capacity lights will go out AND:
If the drives are still in the DroboPro, all of the drive lights will turn
If the drives are NOT in the DroboPro, the first drive light will turn