Citrix ADC MPX
the appliances that accommodate four power supplies. These appliances need two power supplies
for proper operation. The other power supply serves as a backup. All power supplies must be of the
same type (AC or DC).
Note: If the appliance has only one power supply, you have to shut down the appliance before replac-
ing the power supply. With two power supplies, you can replace one power supply without shutting
down the appliance, providedtheother power supply is working. With four power supplies, you can re-
place one or two power supplies without shutting down the appliance, provided the other two power
supplies are working.
To install or replace an AC power supply on a Citrix ADC appliance:
1. Align the handle perpendicular to the power supply. Loosen the thumbscrew (if it is screwed)
and press the lever toward the handle and pull out the existing power supply.
Note
The illustration in the following figures might not representthe actual Citrix ADC appliance.
Figure 1. Remove the existing AC power supply
2. Carefully remove the new power supply from its box.
3. On the back of the appliance, align the power supply with the power supply slot.
4. Insert the power supply into the slot and press against the semicircular handle until you hear
the power supply snap into place.
5. Connect the power supply to a power source. If connecting all power supplies, plug separate
power cords into the power supplies and connect them to separate wall sockets.
Note
Citrix ADC appliances emit a high-pitched alert in the following scenarios:
• One power supply fails
• You connect only one power cable to an appliance in which two power supplies are in-
© 1999‒2022 Citrix Systems, Inc. All rights reserved. 109