SSD replacement is quite simple; the FMADIO device needs to be powered down, but does not need to be un-racked. Front access to the system is all that’s required.
Below is a picture of the FMADIO100G 1U.

FMADIO 100G SSD Replacement
1) Power down the system
It’s preferred that the system is powered down when replacing SSDs.
2) Remove the SSD
Remove the SSD by pressing on the orange tab as pictured below.
3) Remove the SSD entirely from the chassis
Remove the SSD + caddie entirely from the chassis.
4) Remove SSD from caddie
Remove the SSD from the caddie via 2 screws on each side of the drive.