Installation guide

Pre-Installation Requirements
BlackDiamond 20808 Switch Hardware Installation Guide
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Pre-Installation Requirements
For detailed information about rack specifications and space requirements, see Chapter 2.
CAUTION
An unpopulated BlackDiamond 20808 chassis weighs approximately 165 pounds. as shipped. Extreme Networks
recommends that you remove all installed blanks and the front fan tray before you install the chassis in the rack.
Removing these items will reduce the chassis weight by approximately 44 pounds.
Lifting the chassis safely requires a minimum of two people, or appropriate lifting equipment. When you install the
chassis in a rack, it is advisable to have a third person to help guide the chassis into position in the rack.
To install the BlackDiamond 20808 chassis in an equipment rack, you need the following tools:
● ESD-preventive wrist strap (provided)
● 19-inch support bracket (two provided)
● Rack-mount screws appropriate for your organization’s rack system, as follows:
■ 4 screws to attach each support bracket
■ 12 screws to secure the chassis in the rack
The screw size will vary based on your organization’s rack system; screws are not provided.
● Screwdriver appropriate for the selected rack mounting screws
● # 2 Phillips screwdriver (only for mid-mount installation)
Use a Phillips screwdriver to attach the mid-mount brackets to the middle of the chassis sides.
● Chassis grounding materials as listed on page 55.
NOTE
Read the information in this chapter thoroughly before you attempt to install the BlackDiamond 20808 chassis.
The chassis sides have hand-grip recesses to help you lift and maneuver the chassis.
Front-Mounting a BlackDiamond 20808 Chassis
CAUTION
If you front-mount a BlackDiamond 20808 chassis in a 4-post rack, make sure that the rear posts do not obstruct
airflow to the PSUs at the back. The distance from the front of the chassis to the PSU vents is 22 inches (56 cm).
Allow a minimum of 5 inches (12.7 cm) of clear space in front of a front-opening PSU air baffle.
If you install the BlackDiamond 20808 switch in a cabinet, do not use the rear cabinet door unless at least
12 inches (30.5 cm) of unobstructed space is available behind the switch.
To front-mount a BlackDiamond 20808 chassis:
1 Identify the rack location where the chassis will be installed.
2 Using four rack mounting screws, attach a support bracket to the equipment rack immediately below
the chassis location (Figure 17). (Screws are not provided.)