To turn on the power of a host, perform the following operations in the Host Management window. You can execute this operation only when you have logged on as an administrator.

To turn on the power:

1. From the Host Management window, select the host whose power is to be turned on.
   You can select multiple hosts.
   
2. From the Host Operation menu, choose Power on.
   A confirmation message is displayed.
   
3. Check the message, and then click the OK button.

Power to the selected hosts is turned on.

Notes

• If anything other than a host is selected in the Host Management window (such as a site, domain, or manager), the power-on operation cannot be performed.
• The server power-on operation is applicable only to hosts that support power control.

To turn off the power after shutting down a host, perform the following operations in the Host Management window. You can execute this operation only when you have logged on as an administrator.

1. From the Host Management window, select the servers whose power is to be turned off.
   You must select at least one server.
   
2. From the Host Operation menu, choose Power off.
   A confirmation message is displayed.
   
3. Check the message, and then click the OK button.

Power to the servers is turned off.

Notes

• If you have selected anything other than a host in the Host Management window (such as a site, domain, or manager), the power-off operation cannot be performed.
• If the power-off operation is performed but no reply is sent from the host, a command timeout error might be displayed after a while. In such a case, from the Host Operation menu, choose Connect for the host at which the power-off operation was executed. If a command timeout error is displayed again, power to the host has been turned off successfully.

In the event of a fatal error, the normal power-off operation might not be able to power down a server. In such a case, power to the server can be turned off forcibly by perform the following operations. You can execute this operation only when you have logged on as an administrator. The forced power-off operation does not include shutdown processing.

To turn off the power forcibly:

1. From the Host Management window, select the server whose power is to be turned off forcibly.
2. From the Host Operation menu, choose Forced power-off.
   A confirmation message is displayed.
   
3. Confirm the server whose power is to be turned off forcibly, and then click the OK button.

Power to the server is turned off forcibly.

This subsection describes how to reboot a host.

You can execute this operation only when you have logged on as an administrator.

To reboot a server:

1. From the Host Management window, select the server that is to be rebooted.
   Make sure that you select at least one server.
   
2. Form the Host Operation menu, choose Reboot.
   A confirmation message is displayed.
   
3. Check the server that is to be rebooted, and then click the OK button.

The server is rebooted.

To perform a forced reset of the OS on a host when the host can no longer be controlled, perform the following operations. You can perform this procedure only when you have logged on as an administrator. The forced reset operation does not include shutdown processing.

To forcibly reset a host OS:

1. From the Host Management window, select the host whose OS is to be forcibly reset.
   Make sure that you select at least one host.
   
2. From the Host Operation menu, select Forced Reset.
   A confirmation message is displayed. If you selected more than one host, a confirmation message is displayed for each host.
   
3. Confirm the host or hosts to be forcibly reset, and then click either the OK or All OK button.
   By clicking the All OK button, you can accept all of the selected hosts at once.
   

Each selected host's OS is forcibly reset.