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Chapter 2 System Setup 61
How to Power Off the System
In general, system administrators bring the operating system and applications to a
halt in an orderly manner, warning the system users and others of a system
shutdown. Follow the instructions below to accomplish an orderly shutdown of the
server.
Before You Begin
You need the system key to perform this procedure.
Caution – Before turning off system power, halt the operating system as described
below. Failure to halt the operating system properly can result in loss of disk drive
data and will sever network connections.
What to Do
1. Notify users that the system will be powered down.
2. Back up the system files and data, if necessary.
3. Halt the operating system using the appropriate commands.
Refer to the Solaris Handbook for Sun Peripherals that corresponds to your
operating system.
4. Wait for the system halt messages and the ok prompt.
Caution – If the system hangs, hold the Power button down for four seconds while
the keyswitch is in either the Power-On/Off or the Diagnostics position, or turn the
keyswitch to the Off position. Either of these actions will cause an immediate
hardware power off, and you will risk the loss of disk drive data and will sever
network connections. For information about these keyswitch positions, see
“Keyswitch Settings” on page 9 and “System LED Indicators” on page 10 for more
information about restoring the console.