Citrix ADC MPX
Citrix ADC field replaceable units (FRU) are ADC components that a user or a technician can replace at
the user’s site. The FRUs for a Citrix ADC appliance include DC or AC power supplies, solid‑state (SSD)
or hard‑disk drives (HDD), direct attach cable (DAC), and the bezel of the appliance.
Notes:
• The SSD or HDD stores your configuration information, and it must be restored from a
backup aer the unit is replaced.
• All Citrix ADC FRUs must be purchased from Citrix. Components not provided by Citrix are
not supported on Citrix ADC appliances. Contact your Citrix sales representative to buy
FRUs for your appliance.
Power supply
For appliances containing two power supplies, the second power supply is optional but recom‑
mended. Some appliances can accommodate four power supplies, and require two power supplies
as a bare minimum for proper operation. As a best practice, plug in all the power supplies for
redundancy.
The appliance ships with a standard power cord that plugs into the appliance’s power supply. It has
a NEMA 5–15 plug on the other end for connecting to the power outlet on the rack or in the wall.
For power‑supply specifications, see Common Components.
Note: If you suspect that a power‑supply fan is not working, see the description of your platform.
On some platforms, what appears to be the fan does not turn, and the actual fan turns only when
necessary.
On each power supply, a bicolor LED indicator shows the condition of the power supply.
Electrical safety precautions for power supply replacement
• Make sure that the appliance has a direct physical connection to earth ground during normal
use. When installing or repairing an appliance, always connect the ground circuit first and dis‑
connect it last.
• Never touch a power supply when the power cord is plugged in. As long as the power cord is
plugged in, line voltages are present in the power supply even if the power switch is turned o.
For the complete list of safety precautions, see Safety, Cautions, Warnings, and Other Information.
Replace an AC power supply
Most Citrix ADC MPX platforms accommodate two power supplies. Some platforms accommodate
four power supplies. All Citrix ADC appliances function properly with a single power supply, except
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