Powering Down The Hp Netserver; Connecting Ac Power To Multiple-Server Configurations; Sleep States (Acpi) - HP D5970A - NetServer - LCII Installation Manual

Chapter 2

Powering Down the HP NetServer

1. Log off all users, and if necessary, back-up files.
2. Follow instructions in your network operating system (NOS)
documentation to gracefully shut down all networking software and
applications.
3. Press the power switch on the HP NetServer's control panel when
prompted by the operating system.
Normally, this completes the shutdown procedure.
NOTE
The power supplies will continue to provide a standby voltage
to the HP NetServer until the power cord is disconnected.

Connecting AC Power to Multiple-Server Configurations

The HP NetServer temporarily draws a large "inrush current," when first
connected to an AC power source. This occurs even when the HP NetServer is in
standby mode. Inrush current is much greater than the HP NetServer's normal
operating current and, generally, the AC power source can handle the inrush
current.
Ensure you have allowed for additional inrush current, if you are installing several
HP NetServers on one circuit. If a power failure occurs and power is restored, all
the HP NetServers immediately begin to draw inrush current at the same time. If
the circuit breakers on the incoming power line have insufficient capability, the
breakers may trip and thus prevent the HP NetServers from powering up.
If you have prepared your site for the installation of several HP NetServers on one
circuit, without considering the inrush current, you may have to take some
necessary precautions by upgrading the circuit. Refer to Appendix A,
"Specifications" for power requirements.

Sleep States (ACPI)

The sleep states are only available if your NOS supports power management based on the
ACPI (Advanced Configuration and Power Interface) standard. The term "sleep" state
refers to a low latency (reduced power consumption) state, which can be re-started
(awakened) restoring full operation to the HP NetServer. In this sleep state, the HP
NetServer appears to be off, indicated by no display on the monitor and no activity for
the CD-ROM or internal hard drives. However, when the HP NetServer detects activity
(i.e. mouse, keyboard, or certain types of LAN activity), it returns to a fully operational
state.
Controls, Indicators, and Ports
17