Cisco IPS 7.1 Installation Guide download pdf (Page 116)

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Cisco Intrusion Prevention System Appliance Hardware Installation Guide for IPS 7.1

OL-24002-01

Chapter 4 Installing the IPS 4345 and IPS 4360

Removing and Installing the Power Supply

• The sensor requires 10 seconds from the time it is placed into standby mode before the power state

can be updated and stored. This means any changes to the power state within the first 10 seconds of

entering standby mode (including the standby mode itself) will not be observed if AC power is

removed within that time.

Understanding the Power Supplies

The IPS 4345 ships with one fixed fan and one fixed power supply (AC or DC) installed. The IPS 4360

ships with one power supply (AC or DC) installed. You can add an additional power supply or you can

order the IPS 4360 with two power supplies installed. Having two power supplies installed provides a

redundant power option. This configuration ensures that if one power supply fails, the other power

supply assumes the full load until the failed power supply is replaced. To maintain airflow, an empty bay

must be covered or both bays must be populated with power supplies. If only one power supply is

installed, make sure that it is installed in slot 0 (left slot) and that slot 1 (right slot) is covered with a slot

cover. If only one power supply is installed, do not remove the power supply unless the appliance has

been powered off. Removing the only operational power supply causes an immediate power loss.

Note The IPS 4360 can support two AC or two DC power supplies. Do not mix AC and DC power supply units

in the same chassis.

The power supplies each provide 400 W of output power and are used in a 1 + 1 redundant configuration.

There is no input switch on the faceplate of the power supplies. The power supply is switched from

Standby to ON by way of a system chassis STANDBY/ON switch. The power supply slot numbers are

on the back of the chassis to the left side of each power supply. When facing the back of the chassis,

power supply slot 0 (PS0) is to the left and power supply slot 1(PS1) is to the right. By default, the

factory installs a single power supply in slot 0.

The appliance supports the following power supplies:

• AC power supply—Provides 400 watt output power with two DC voltage outputs: +12 V and +5 V.

The AC power supply operates between 85 and 264 VAC. The AC power supply current shares on

the 12 V output and is used in a dual hot pluggable configuration. The AC power supply consumes

a maximum of 471 W of input power.

• DC power supply—Provides 400 watt output power with two DC voltage outputs: +12 V and +5.0

V. The power supply operates between –40.5 and –72 VDC. The DC power supply current shares on

the 12 V output and is used in a dual hot pluggable configuration. The DC power supply consumes

a maximum of 500 W of input power.

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Cisco IPS 7.1 Installation Guide Page 116