Installation Guide

11-6
Cisco x90 Series Content Security Appliances Installation and Maintenance Guide
Chapter 11 Maintaining Cisco Content Security Appliances
Replacing Cisco Content Security Appliance Components
Replacing Power Supplies
The appliance can have one or two power supplies. When two power supplies are installed, they are
redundant and hot-swappable, with one active power supply and one standby (1+1).
This appliance also supports cold redundancy. Depending on the power being drawn by the appliance,
one power supply might actively provide all power to the system while the remaining power supply is
put into a standby state. For example, if you have two supplies connected to AC power, but the power
consumption can be satisfied by power supply 1, then power supply 2 is put into a standby state.
• See Environmental Specifications, page A-2 for more information about the supported power
supplies.
• See Rear Panel LEDs and Buttons, page 3-5 for information about the power supply LEDs.
• See Installing a DC Power Supply, page 11-7 for information about wiring a DC power supply.
Note If you have ordered an appliance with power supply redundancy (two power supplies), you do not have
to power off the appliance to replace power supplies because they are redundant as 1+1 and
hot-swappable.
Note Do not mix power supply types in the appliance. Both power supplies must be the same wattage and
Cisco product ID (PID).
Step 1 Remove the power supply that you are replacing or a blank panel from an empty bay:
a. Perform one of the following actions:
– If your appliance has only one power supply, shut down and power off the appliance as
described in Shutting Down and Powering Off the Appliance, page 11-2.
– If your appliance has two power supplies, you do not have to shut down the appliance.
b. Remove the power cord from the power supply that you are replacing.
For a DC power supply, release the electrical connector block from the power supply by pushing the
orange plastic button on the top of the connector inward toward the power supply (see Figure 11-4).
Pull the connector block from the power supply.
c. Grasp the power supply handle while pinching the green release lever towards the handle (see
Figure 11-5).
d. Pull the power supply out of the bay.
Step 2 Install a new power supply:
a. Grasp the power supply handle and insert the new power supply into the empty bay.
b. Push the power supply into the bay until the release lever locks.
c. Connect the power cord to the new power supply.
For a DC power supply, push the electrical connector block into the power supply.
d. If you shut down the appliance, press the Powe r button to return the appliance to main power mode.