Cisco APIC L4 Manuale di installazione e assistenza - Pagina 25

Sfoglia online o scarica il pdf Manuale di installazione e assistenza per Server Cisco APIC L4. Cisco APIC L4 46.

Installing the Server

Caution

When you are installing a server, use the following guidelines:

• Plan your site configuration and prepare the site before installing the server.

• Ensure that there is adequate space around the server to allow for accessing the server and for adequate

• Ensure that the air-conditioning meets the thermal requirements listed in the

• Ensure that the cabinet or rack meets the requirements listed in the

• Ensure that the site power meets the power requirements listed in the

Grounding Requirements

The switch is sensitive to variations in voltage supplied by the power sources. Overvoltage, undervoltage,

and transients (or spikes) can erase data from memory or cause components to fail. To protect against these

types of problems, ensure that there is an earth-ground connection for the switch. You can connect the grounding

pad on the switch either directly to the earth-ground connection or to a fully bonded and grounded rack.

When you properly install the chassis in a grounded rack, the switch is grounded because it has a metal-to-metal

connection to the rack. Alternatively, you can ground the chassis by using a customer-supplied grounding

cable that meets your local and national installation requirements (we recommend 6-AWG wire for U.S.

installations) connected to the chassis with a grounding lug (provided in the switch accessory kit) and to the

facility ground.

Note

The rack must be of the following type:

• A standard 19-in. (48.3-cm) wide, four-post EIA rack, with mounting posts that conform to English

• The rack-post holes can be square 0.38-inch (9.6 mm), round 0.28-inch (7.1 mm), #12-24 UNC, or #10-32

• The minimum vertical rack space per server must be one rack unit (RU), equal to 1.75 in. (44.45 mm).

To prevent loss of input power, ensure the total maximum loads on the circuits supplying power to the

switch are within the current ratings for the wiring and breakers.

airflow. The airflow in this server is from front to back.

on page

35.

If available, you can use an uninterruptible power supply (UPS) to protect against power failures.

You automatically ground AC power supplies when you connect them to AC power sources. For DC

power supplies, you must connect a grounding wire when wiring the power supply to the DC power

source.

universal hole spacing, per section 1 of ANSI/EIA-310-D-1992.

UNC when you use the Cisco-supplied slide rails.

Rack Requirements, on page

Power Specifications, on page

Cisco APIC M4/L4 Server Installation and Service Guide

Grounding Requirements

Environmental Specifications,

21.

38.