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• This procedure requires access to either management GUI or CLI command as a root user. IBM service
personnel need to coordinate with the customer to work on this procedure.
• Do not insert a PSU if the PSU slot does not contain a power interposer.
• Do not operate the enclosure without a power interposer and PSU in a PSU slot for longer than 5
minutes. Operating for longer than this period might cause the enclosure to shut down due to
overheating.
• In case a PSU fails, you should expect the following LED indication:
– Enclosure LED amber fault is ON (non-flashing)
– Amber fault LED on the faulty PSU is also ON
• In the management GUI, you can access the details of the power supply units from the Monitoring >
Hardware Details page as shown in the Figure 6 on page 24:
Figure 6. Details of Power Supply Units in the management GUI
Two sets of power supply units are available for each enclosure.
• Remove the replacement PSU from its packaging and have it available before carrying out this
procedure.
• No tools are required to complete this task. Do not remove or loosen any screws.
• Although many components are hot-swappable, they are intended to be used only when your system is
not active (no I/O operations).
• Be careful when you are replacing the hardware components that are located in the back of the system.
Do not inadvertently disturb or remove any cables that you are not instructed to remove.
•
electrostatic discharge (ESD)-sensitive devices.
24 IBM Elastic Storage System 3000: Service Guide
When you replace this part, you must follow recommended procedures for handling
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