The system’s two power supplies each have three LEDs that indicate status. These indicators are listed in the table below.
Power Supply Condition | Green LED | Yellow LED | Red LED |
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No AC power to either power supply | Off | Off | Off |
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Power supply failure or no AC power to this | Off | Off | On |
power supply |
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AC power present and standby outputs on | Blinking | Off | Off |
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Power supply DC outputs on and OK | On | Off | Off |
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Current limit | On | Off | Blinking |
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Predictive failure | On | Blinking/on | Off |
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If the System Has a Problem
If you discover a problem with the Xserve RAID system, you can assess the situation and often solve the problem from a remote computer. You can use the RAID Admin application from a Mac OS X computer to see the status of several system attributes. For more information about this software and other monitoring tools, see the document “Using RAID Admin and Disk Utility” on the CD that came with your system.
If you have access to the system itself, you can use the buttons and indicator lights on the front and back panels to change the system’s status. These include
mPower (back panel): Press to turn the system on. Press and hold for 5 seconds to turn power off.
mMute (front and back panel): Press to turn off the alarm that signals an error condition. Check the management software for information about the problem; see the document “Using RAID Admin and Disk Utility” on the CD that came with your system for details.
mSystem identifier (front and back panel): This light helps you determine which system in a
If you need to exchange components in the system, see Chapter 6, “Installing or Replacing Components,” on page 49 for instructions.
The Apple Support website has the latest troubleshooting information and software updates: www.apple.com/support.
48 Chapter 5
