Platform Maintenance
About maintaining the platform
The i2000/i4000 Series platform contains components that you can replace individually without
exchanging the entire system. This platform contains these replaceable components:
• AC power supply
• DC power supply
About power supplies
The i2000/i4000 Series platform supports up to two AC or DC hot-swappable power supply units
(PSUs). Most platforms come with only one power supply by default.
Caution: Running without power supply units installed in all available bays in the platform can affect
cooling and electromagnetic interference (EMI). If you need to run the unit with one power supply unit
(PSU), you must install a blank supply bracket into the empty power supply bay. The blank supply
bracket is required to maintain proper airflow in the system. If you do not have a blank supply bracket,
leave all supplies installed and disconnect power from any unused PSUs.
Caution: Do not mix power supply unit (PSU) models of different wattage. If two PSUs are installed in
the same system, use only PSUs of the same wattage and part number.
Important: You should use only one power supply unit (PSU) type (AC or DC) in a platform. AC and DC
interoperability is not supported.
Important: This product is sensitive to electrostatic discharge (ESD). F5
®
recommends that you use
proper ESD grounding procedures and equipment when you install or maintain the unit.
Note: Be sure to use only the power supply unit (PSU) that is designed for your platform. For example, a
lower wattage PSU might not electrically connect if your platform is designed to use a higher wattage
PSU.
Note: The power supply units (PSUs) do not have an on/off switch. Power is controlled from the rack
switch or the mains power source.
Note: After removing input power from any power supply unit (PSU), wait 30 seconds before reapplying
input power to the PSU.
About AC power supplies
This platform can support up to two AC power supply units (PSUs). You can hot swap a supply without
powering down the system if there are two installed, and one remains installed and operational during the
replacement process.
The platform supports power supply redundancy, which ensures that the system is unaffected if a single
supply fails in a system containing more than one operational supply.