Server Power State Overview
The server has the following possible power states.
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Powered off
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The server is completely powered off only when the power cords are
disconnected.
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Standby power
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In Standby power mode, the host is powered off, while the service
processor is on. The green OK status indicator on the front panel
blinks.
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Full power
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When you power on the host, the server enters Full power mode. In
Full power mode, the green OK status indicator is steady on.
You can power the host off gracefully, or immediately.
When you power off the server gracefully, Advanced Configuration
and Power Interface (ACPI)-enabled operating systems prepare the
operating system before shutting it down. When you power the server
off immediately, no such attempt occurs.
Caution -
Data loss: To prevent data loss, prepare the operating system
for shutdown before performing an immediate power off.
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Note -
If you updated the system firmware and selected the Delay BIOS Upgrade option,
Oracle ILOM installs the BIOS firmware upgrade when you reset or power cycle your
server. This causes a reset to take longer than normal and causes the server to
power cycle during the reset. This is normal, expected behavior during a delayed
BIOS upgrade. For more details, see
Update the BIOS and Service Processor Firmware (Oracle ILOM).