Green: No action is required. All drives are healthy.
Solid Yellow: Add a drive or replace the current drive with a larger drive soon.
Your Drobo device is running out of disk space. See Adding Capacity (or
Drives).
Blinking Yellow and Green: Do not remove these drives or power down. Your
Drobo device is working to protect your data.
Solid Red: Add a drive or replace the current drive with a larger drive
immediately. Your Drobo device is critically low on space. See Adding
Capacity(or Drives)
Blinking Red: Replace this drive immediately. This drive has failed. See Adding
Capacity(or Drives)
Green: The power is on and your Drobo device is ready.
Yellow: Your Drobo device is in the process of powering on.
Red: Your Drobo device has overheated. Safely power down your Drobo 5D3,
disconnect the data cable and then the power cable. Let it cool down and then
restart.
Blinking Green: Data is actively being transferred between your computer and
your Drobo device. Do not remove or add drives during this process.
Blue: Displays the percentage of your Drobo device that is full, in 10%
increments. There are 10 capacity gauge lights. So, for example, if your Drobo
device is 30% full, three blue lights display.