Sun Microsystems Netra 440, Руководство по обслуживанию

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26 Netra 440 Server Service Manual • August 2004
Powering Off the System
Refer to the following sections to power off the system either locally or remotely:
■
“Powering Off the Server Locally” on page 26
■
“Powering Off the System Remotely” on page 27
Powering Off the Server Locally
Caution – Applications running on the Solaris OS can be adversely affected by a
poorly executed system shutdown. Ensure that you stop and exit applications, and
shut down the operating environment before powering off the system.
1. Notify users that the system will be powered down.
2. Back up the system files and data, if necessary.
3. Open the system door.
4. Ensure that the rotary switch is in the Normal or Diagnostics position (
FIGURE 2-2
).
5. Press and release the On/Standby button (
FIGURE 2-2
).
The system begins a graceful software system shutdown.
Note –
Pressing and releasing the On/Standby button initiates a graceful software
system shutdown. Pressing and holding in the On/Standby button for four seconds
or turning the rotary switch to the Standby position causes an immediate hardware
shutdown. Whenever possible, you should use the graceful shutdown method.
Forcing an immediate hardware shutdown can cause hard drive corruption and loss
of data. Use that method only as a last resort.
6. Wait for the system to power off.
The power supply Power OK LEDs go out when the system is powered off.
7. Turn the rotary switch to the Standby position (
FIGURE 2-2
).
Caution –
Be sure to turn the rotary switch to the Standby position before handling
any internal components. Otherwise, it is possible for a remote ALOM user to power
on the system while you are working inside it. The Standby position is the only
rotary switch position that prevents someone from using an ALOM session to restart
the system remotely.
8. Close the system door.