HP Tc2100 hp server tc2100 installation sheet (English) - Page 19

Powering-Down the Server, Connecting AC Power to Multiple-Server Configurations, Sleep States (ACPI)

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Chapter 2 Controls, Ports, and Indicators Powering-Down the Server 1. Log off all users and, if necessary, back up files. o Schedule the power down for a time when the Server's down time will affect the fewest users. o If you will be doing any kind of hardware or software upgrade, ensure the Server's data has been backed up. o Follow instructions in your network operating system (NOS) documentation to gracefully shut down all networking software and applications. WARNING The power supply will continue to provide standby current to the Server until the power cord is disconnected from the rear panel. 2. Press the Power switch on the HP Server's control panel when prompted by the operating system. Normally this completes the power-down procedure. Connecting AC Power to Multiple-Server Configurations The HP Server temporarily draws a large "inrush current," when first connected to an AC power source. This also occurs when the Server is in a standby mode (power is turned off, but the power cord is plugged into AC power). The inrush current is much greater than the Server's normal operating current and generally, the AC power source can handle the normal inrush current. However, if you install several HP Servers on one circuit, precautions are necessary. If there is a power failure and power is then restored, all the servers immediately begin to draw inrush current at the same time. If the circuit breakers on the incoming power line have insufficient capability, the breaker may trip and thus prevent the servers from powering up. When preparing your site for installation, allow for the additional inrush current. Refer to Table A-1, "Power Supply Specifications" in Appendix A. Sleep States (ACPI) The HP Server supports the ACPI (Advanced Configuration and Power Interface) standard, which is a key component of a NOS's directed power management. The supported features are only available when an ACPI-compliant NOS is installed on 13

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Chapter 2
Controls, Ports, and Indicators
13
Powering-Down the Server
1. Log off all users and, if necessary, back up files.
o
Schedule the power down for a time when the Server’s down time will
affect the fewest users.
o
If you will be doing any kind of hardware or software upgrade, ensure the
Server's data has been backed up.
o
Follow instructions in your network operating system (NOS)
documentation to gracefully shut down all networking software and
applications.
WARNING
The power supply will continue to provide standby current to
the Server until the power cord is disconnected from the rear
panel.
2. Press the Power switch on the HP Server's control panel when prompted by
the operating system.
Normally this completes the power-down procedure.
Connecting AC Power to Multiple-Server Configurations
The HP Server temporarily draws a large "inrush current," when first connected to
an AC power source. This also occurs when the Server is in a standby mode
(power is turned off, but the power cord is plugged into AC power). The inrush
current is much greater than the Server's normal operating current and generally,
the AC power source can handle the normal inrush current.
However, if you install several HP Servers on one circuit, precautions are
necessary. If there is a power failure and power is then restored, all the servers
immediately begin to draw inrush current at the same time. If the circuit breakers
on the incoming power line have insufficient capability, the breaker may trip and
thus prevent the servers from powering up.
When preparing your site for installation, allow for the additional inrush current.
Refer to Table A-1, "Power Supply Specifications" in Appendix A.
Sleep States (ACPI)
The HP Server supports the ACPI (Advanced Configuration and Power Interface)
standard, which is a key component of a NOS's directed power management. The
supported features are only available when an ACPI-compliant NOS is installed on