Citrix ADC MPX
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 if one power supply fails or if you connect only one
power cable to an appliance in which two power supplies are installed. To silence the alarm, press
the small red button on the back panel of the appliance. The disable alarm button is functional only
when the appliance has two power supplies.
Replace a DC power supply
Most Citrix ADC MPX platforms can accommodate two power supplies. Some platforms can accom-
modate four power supplies. All Citrix ADC appliances function properly with a single power supply,
except the appliances that can 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, providedthe otherpower 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 a DC power supply on a Citrix ADC appliance:
1. Loosen the thumbscrew and press the lever towards the handle and pull out the existing power
supply, as shown in the following figure.
Note: The illustration in the following figures might not represent the actual Citrix ADC appli-
ance.
Figure 3. Remove the existing DC 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.
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