Dell EMC Data Domain DD9800 Installation Manual page 47

Figure 53. 30"-34" Marking
5. Slide the inner rail mechanism to the rear of the rail until the 30-34" mark is visible. If the inner mechanism is locked,
depress the leaf spring to free it.
6. Adjust the hardware to make sure the mounting holes are aligned with the mounting slots.
7. Secure the length adjustment bracket in place using both screws and nuts that were removed earlier.
8. Repeat for the other rail.
Next steps
After the rails are adjusted to the proper length, install the rails in the rack.
Installing the rails in a third-party rack
The rails are shipped with 6.8 mm adapters that are designed to fit into the NEMA channels of the Dell EMC rack. For
third-party racks, the 6.8 mm adapters must be removed and replaced with rail pins that fit the hole-types in the third-party
rack.
About this task
CAUTION: Exercise care when installing the short rails. Exposed metal edges may be sharp and could damage
cabling or cause injury to personnel.
Refer to the following tables and figures to install each shelf.
The following table shows the rail pins and their suggested use.
Table 4. Pins for third-party racks
Rail Pins from kit
NOTE: Each of the rail alignment pins must be located in the middle holes of the bottom two U spaces of the 4U space.
The following table lists the parts that are referenced in
Part Number and Description
036-028-018
Custom screw, M4 x 10MM
(Quantity: 4 per kit)
036-028-016
3.8MM Alignment Pin
(Quantity: 8 per kit)
036-028-017
4.8MM Alignment Pin
(Quantity: 8 per kit)
Rail installation
CL5503
Suggested Use
Used for any third-party rack. Can be
used in racks with threaded holes.
Used in racks that have M5, #10, or #12
threaded holes.
Used in racks that have M6 threaded
holes.
on page 48.
Install the Disk Shelves in the Rack 47