Pull each storage drive out far enough to disengage if from the disk
                        backplane.
                    See 
Remove an HDD or SSD Storage Drive.
                    
Note - 
                        It is not necessary to completely remove the storage drives from the
                            server; simply pull them out far enough to disengage them from the disk
                            backplane. If you do remove the storage drives from the server, make a
                            note of their locations so that you can reinstall them in the same
                            locations.