Data Domain DD9800 System Installation and Storage Expansion Guide

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 1. Pins for third-party racks

Rail Pins from kit	Part Number and Description	Suggested Use
	036-028-018 Custom screw, M4 x 10MM (Quantity: 4 per kit)	Used for any third-party rack. Can be used in racks with threaded holes.
	036-028-016 3.8MM Alignment Pin (Quantity: 8 per kit)	Used in racks that have M5, #10, or #12 threaded holes.
	036-028-017 4.8MM Alignment Pin (Quantity: 8 per kit)	Used in racks that have M6 threaded holes.

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 Figure 1.

Table 2. Parts list

Image #	Description	Qty	Part number
1	Shelf rail location in 4U space	n/a	n/a
2	Universal Rail Pins (see previous table for details)	n/a	Part of PN 106-569-300 and 106-529-209
3	Shelf rails (2 each/kit) for each node	2	PN 106-569-300 and 106-529-209

1. Remove the 6.8 mm adapters and replace them with the appropriate hardware from the kit:
   1. Using a flat-bladed screwdriver, remove the two 6.8 mm adapters from the adapter mounting block on the rails.
   2. Select the correct adapters from the hardware kit and install the adapters into the adapter mounting block.
2. Locate the 4U rack space designated for the shelf.
3. Install the right rail to the rear channel.
   1. Align the right rail so that the alignment pins are centered on the middle holes of the bottom two U spaces of the 4U space.
   2. Move the bracket with the alignment pins to their correct location.
   3. Push the rail back to secure the rail posts in the cabinet channel.
      An audible click indicates that the rail is secure in the channel. Make sure the rear post/catch mechanism is secure and attached.
4. Install the right rail to the front channel.
   1. Align the front of the right rail so that it is level and the front rail pins are aligned with the middle holes of the bottom two U spaces of the 4U space.
   2. Pull the rail forward, with the posts aligned with the middle holes of the bottom two U spaces of the 4U space.
      An audible click indicates that the connection is secure.
5. Install the left rail by mirroring the previous steps.
6. Remove the shipping tape that is attached to the node rails.

   

7. On both left and right rail assemblies, install a single long screw between the rail posts in the center screw hole to secure the rails as follows:

   

   • If you are installing the rails in a rack that has threaded holes, insert an M4 screw into the smaller of the two center screw holes at both the front and the rear of the rail. The screw is smaller and will pass through the threaded hole in the NEMA racks.
   • If you are installing the rails in a rack that does not have threaded holes, insert an M5 screw that comes with the chassis into the larger of the two center screw holes in the rail at the front and rear of the rack.
   The following table lists the parts that are referenced in Figure 4.

   Table 3. Parts list

   Image #	Description	Qty	Part number
   1	Node rail location in 4U space	n/a	n/a
   2	Node rail square alignment pins	n/a	Part of PN 100-569-209
   4	M5 or M4 securing screws	4	PN 106-002-452 or 036-028-018