How to Install the Rack Mounting Hardware in a Square-Hole Rack

The rack mounting kit consists of adapter brackets, rear braces, shelf rails, cage nuts, and screws.

Caution - The server weighs about 180 pounds (100 kg) when fully loaded with components. To reduce the risk of serious personal injury or equipment damage, use a mechanical lift to install the server into the rack. If a lift is not available, remove components as described in How to Remove Components to Reduce Weight. This reduces the weight of the server to 80 pounds (45 kg).

Always load equipment into a rack from the bottom up so that it does not become top-heavy and tip over. Deploy your rack’s anti-tilt bar to prevent the rack from tipping during equipment installation.

Note - To install rack mounting hardware in round-hole racks, see How to Install the Rack Mounting Hardware in a Round-Hole Rack.

This task requires the following screws and connectors:

Function	Description
Attach adapter brackets to front rack posts	Four M6 x 12
Attach adapter brackets to rear rack posts	Four M6 x 12
Attach braces to rear rack posts	Four M6 x 10 and four M6 cage nuts
Locking screws for rails	Four M4 x 10 flathead

Gather the following screws and connectors:
Verify that you have a 5RU space in your rack.
Select the set of adapter brackets for square-hole racks.
The server ships with two sets of adapter brackets: one for racks with square holes (1) and one for racks with round holes (2). The brackets for square-hole racks (1) have threads. See the following figure.

Note - Arrows on the brackets (3) indicate how the bracket should be oriented. Be sure to install all brackets with the “Top” arrow (3) pointing up.
Attach the brackets to the front posts.
Place the brackets so that the bottom of the bracket is aligned with the bottom of the (5RU) space where the server will go, and that the arrow labelled “top” points up.

Note - The accessory tray includes a printed template that you can use to help align the adapter brackets.

Use one M6 x 16 screw per side. Pass the screw from the outside of the rack, through the holes in the post, and into the threads on the adapter brackets.
The other two holes (per side) are used later, to attach the bezel of the server to the rack.
Attach the brackets to the rear posts.
Place the brackets so that the bottom of the bracket is aligned with the bottom of the (5RU) space where the server will go, and that the arrow labelled “top” points up.
Use three M6 X 16 screws per side (1) to fasten the bracket (2) to the posts (3).
Attach upper rear braces (1) to the rack posts (2) directly above the adapter brackets, as shown in the following figure.
Install two M6 cage nuts (4) per side and then use two M6 x 16 screws (3).
Before tightening the screws, slide the braces (1) up as far as they will go. The holes on the braces are oval-shaped so they can move a little up and down when the screws are loose.
Remove the six screws (1) that hold the left and right shelf extenders (2) on the shelf rails (3), and then remove the shelf extenders.
You must remove the shelf extenders before installing the server in the rack. They are used for other products.
Place the shelf rails into the rack.
The shelf rails expand (1) to fit the rack, then slip into the slots on the adapter brackets (2), and drop into place (3).
Be certain to place the shelf rails in the proper orientation. They are labelled “FRONT LEFT” and “FRONT RIGHT”.
Thread the four M4 X 10 flathead locking screws (1) into the adapter brackets.
These prevent the shelf rails from accidentally lifting out of the adapter brackets.

Next Steps

How to Insert the Server Into the Rack

Skip Navigation Links
Exit Print View
	Sun Fire X4800 Server Installation Guide Sun Fire X4800 Server Documentation