Installation Manual
• Reset—Forces the server to warm-boot: CPUs and I/O resources are reset. Using this option
circumvents the graceful shutdown features of the operating system.
• Cold Boot—Immediately removes power from the server. Processors, memory, and I/O
resources lose main power. The server will restart after approximately 6 seconds. Using this
option circumvents the graceful shutdown features of the operating system.
Configuring the System Power Restore Settings
The System Power Restore Settings section enables you to control system behavior after
power is lost. You can also configure these settings by using the system RBSU or UEFI System
Utilities during POST.
Prerequisites
The Configure iLO Settings privilege is required to perform this procedure.
Changing the System Power Restore Settings
1. Navigate to the Power Management→Server Power page.
2. Select an Auto Power-On value.
This setting determines how iLO behaves after power is restored—for example, when the
server is plugged in or when a UPS is activated after a power outage. This setting is not
supported with micro-UPS systems.
Changes to the Auto Power On value might not take place until after the next server reboot.
3. Select a Power-On Delay value.
This setting staggers server automatic power-on in a data center. It determines the amount
of time that iLO waits before powering on a server after iLO startup is complete. This setting
is not supported with micro-UPS systems.
If a server does not support this feature, N/A is displayed.
4. Click Submit.
Auto Power-On settings
Choose from the following Auto Power-On settings:
• Always Power On—Power on the server after the power-on delay (default for server blades).
• Always Remain Off—The server remains off until directed to power on.
• Restore Last Power State—Returns the server to the power state when power was lost. If
the server was on, it powers on; if the server was off, it remains off. This option is the default
setting for nonblade servers. It is not available on server blades.
248 Using the power management features