Dell EMC PowerProtect DD9900, Installation Manual

Page: 59 / 96

The rails are compatible with racks with square holes, unthreaded round holes, and threaded round
holes.
Installing the rails in the cabinet
About this task
Note: The snap-in rails are dedicated left and right, and cannot be interchanged.
Procedure
1. Orient the rails. Face the front of the cabinet when orienting the left and right rail
placement. The front edge of each rail is stamped L or R.
2. From the rear of the cabinet, insert the adapters into the holes on the rear rack channel with
the rail extended as shown in the following figure.
Figure 53 Push rail into rear channel mounting holes
3. Push the rail into the rear mounting holes until the spring clips snap into place on the outside
of the rear channel.
CAUTION To ensure proper alignment of the rails, ensure that:
l
The holes on the rail line up with the holes on the cabinet.
l
The rails are level and using the same cabinet Unit markers from front to rear.
4. From the rear of the cabinet, secure the rails in place using one M5 screw on each rail.
Figure 54 Installing the M5 Screw
Install the Disk Shelves in the Rack
Dell EMC PowerProtect DD9900 System Installation Guide 59