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Netra 150 Server Hardware Installation Manual

Powering Off the System

Before turning off the system power, you must halt the operating system or data loss may occur.

To shut down the system and give users a shutdown warning:

  1. Notify users that the system is going down.

  2. Back up the system files and data to tape, if necessary.

  3. Halt the system.

    Refer to the Netra User's Manual for those instructions.

    Note -

    Always halt the system using the HTML interface instructions given in the Netra User's Manual; if you halt the system using the command line interface, you may have to reset one of the power supplies inside the Netra 150 before you can fully restart it.

  4. If you have a monitor or terminal connected to the Netra 150 server, wait for the system-halted message and the boot monitor prompt.

  5. Locate the power switch at the rear of the Netra 150 server (Figure 1-20).

    Figure 1-20 Netra 150 Server Power Switch

    Graphic

  6. Turn the power switch to the OFF (O) position.

    Caution - Caution -

    Some versions of the Netra 150 server come equipped with an Uninterruptible Power Supply (UPS). If a UPS is present in your system, under some fault conditions it is possible for the UPS to continue providing power to the unit even though the power switch is turned off. If you can still hear the cooling fans operating after you have turned the power switch to the OFF (O) position, then this fault condition is present and the UPS is still providing power to the unit. If this occurs, do not attempt to service the unit until the UPS is fully discharged. To discharge the UPS, disconnect the power cord from the rear of the system and turn the power switch back on. It will take approximately 20 minutes for the UPS to fully discharge. Contact your local Sun service representative to correct the UPS problem before attempting to service the Netra 150 server.