Data Domain DD9800 System Installation and Storage Expansion Guide

Inserting and securing the top cover and shelf

About this task

The captive shoulder screws attach the shelf to the cabinet.

Refer to the following table for installation in third-party racks:

Table 1. Truss head screws

Truss head screw from kit	Part number and description	Suggested use
	036-032-010 Screw, M5-0.8x12, Truss Head Phillips with patch	Can be used in racks and third-party non-threaded hole racks.
	036-032-011 Screw, M6-1.0x12, Truss Head Phillips with patch	Can be used in non- racks.
	036-032-009 Screw, 10-32x.5, Truss Head Phillips with patch	Can be used in non- racks.
	036-032-012 Screw, 12-24x.5, Truss Head Phillips with patch	Can be used in non- racks.

1. For Dell EMC racks, use the orange shelf latch handles to push the shelf completely into the cabinet. Align the two semi-captive M5 shoulder screws on each side with the mounting holes on the cabinet. Thread the shoulder screws into the mounting holes and finger-tighten the shoulder screws.

   

   • To install the shelf into a third-party rack that is not compatible with the M5 shoulder screws, do the following:
     1. Remove the semi-captive M5 screws by sliding them from the ears.

        

     2. For non-threaded racks, place tinnerman clips that match the truss-head screws over the mounting holes on the rack. Refer to Table 1 to select the correct truss head screws.

        

     3. Use the orange shelf latch handles to push the shelf completely into the cabinet. Secure the shelf to the rack using four truss-head screws.
2. Secure the top cover to the cabinet:
   NOTE

   • Some configurations do not have any hardware installed into the top cover. In these configurations, use the appropriate truss head screw to attach the top cover to the cabinet.
   • Some configurations have semi-captive screws in the top cover that will attach to Dell EMC cabinets.
   • For third-party cabinets, you can remove the semi-captive screws and use truss head screws to attach the top cover to the cabinet.

   To secure a top cover that does not have any mounting hardware, use the screws or pins from the kit that accompanies the device. These screws secure the shelf cover and prevent the cover from coming out of the cabinet during operation. Secure the top cover to the rack as follows:

   1. If the shelf is being installed into a Dell EMC rack, secure the top cover to the rack using M5 truss head screws from the kit. Tighten the screws until they are finger tight.
   2. If you are installing the shelf into a third-party rack, identify the mounting holes on the rack that will line up with the mounting holes on the top cover. Refer to Table 1 to select the truss head screws to secure the top cover to the rack. For non-threaded racks, place tinnerman clips over the rack mounting holes. Refer to the following figure to attach the top cover to the rack using the appropriate truss head screws from the hardware kit that comes with the shelf.

      

3. To secure the top cover using a top cover with semi-captive screws, do the following:
   • For a Dell EMC rack, align the semi-captive screws with the mounting hole in the cabinet and thread the screw into the mounting hole.
   • For a third-party rack that is not compatible with the semi-captive screw, remove the semi-captive screw by pulling the screw assembly out the side of the top cover. Identify the mounting holes on the rack that will line up with the mounting holes on the top cover. Refer to Table 1 to select the truss head screws to secure the top cover to the rack. For non-threaded racks, place tinnerman clips over the rack mounting holes. Attach the top cover to the rack using the appropriate truss head screws from the hardware kit that comes with the shelf.