Figure 34 Installing and securing the rails—rear
2. Align the flanges on the inside the mounting holes of the rack. Adjust the rails to the fit the
rack you are using. Insert the two adapters on the rail into the mounting holes, in both the
front and the rear of the rails. Secure the rails to the rack using two knurled screws from the
hardware package, one in the front of the rail, and one in the rear of the rail. Torque the
screws to 12-16 inch-pounds. Repeat for the other rail.
Figure 35 Installing tray
3. Orient the tray so that the UP arrow is pointed up and the end of the tray that is labeled
FRONT is to the front of the rack. Slide the tray into the rails until it locks into place with an
audible click. To release the tray, press the spring clips up and pull the tray towards the
front of the rack.
Install the Disk Shelves in the Rack
46 Dell EMC PowerProtect DD9900 System Installation Guide