Figure 26 Attaching the front rail with the screw3. Attach the small adapter to the rear of each rail using M5 screws.4. At each rack post, determine the vertical position in the rack where the rails areto be installed. The top-most mounting hole for a particular rack unit (RU)mounting position is typically identified by a mark or hole. Racks may also bescreen-printed to show the positions of the rack units.Notel To comply with Data Domain rack mounting guidelines, the system controllershould be installed in the pre-defined space in the rack for systemcontrollers. Refer to theInstallation and Setup Guide for your system.l Two people may be required to attach the rail/bracket assembly to the rack.5. Install the screws supplied in the adapter kit to the rack. For example, the 10-32threaded hole rack would require the installation of the 10-32 screws. Install thescrews in the appropriate locations until they are tight against the rack.6. As needed, select the bracket marked right or left. Orientation assumes you arefacing the front of the rack.7. Slide the adjustable part of the bracket partly open.8. Attach the first rail to the rack as follows:a. Hold the rail against the inside of the rack with the rear bracket flush withthe rear of the rack. Use the screws threaded into the rack to hold the rearof the rail kit in place.b. Pull the front of the rail until it is flush with the inside of the rack front.c. Attach the rails to the rack by installing the appropriate nuts onto the screwsthreaded into the rack. Use the supplied wrench to tighten the nuts. Do thisfor the front and rear of the rail kit.Install the System in the Rack44 Data Domain DD9500 and DD9800 Systems 6.1 Hardware Overview and Installation Guide
