Server Admin 10.4 Help

Setting Up Your Server for Automatic Reboot

You can set up Energy Saver options on your Mac OS X Server computer to automatically restart if it goes down due to a power failure or system freeze.

The automatic reboot options are:

• Restart automatically after a power failure. The power management unit automatically starts up the server after a power failure.
• Restart automatically if the computer "freezes." The power management unit automatically starts up the server after the server stops responding, has a kernel panic, or freezes.

When you select the option to restart automatically after a "freeze," Mac OS X Server spawns the wdticklerd daemon, which every 30 seconds commands your computer to reboot after 5 minutes. Each time the command is sent, the restart timer is reset. Thus, the timer won't reach 5 minutes as long as the server is running. But if the computer freezes, the power management unit will restart it after 5 minutes.

1. Log in to the server as an administrator.
2. Open System Preferences and click Energy Saver.
3. Click Options.
4. Under Other Options, select the two restart options.
5. Close System Preferences.