Power Management - Sun Microsystems Sun Blade 1000 Service Manual

C.6

Power Management

The objective of the Environmental Protection Agency's Energy Star program is to
reduce power consumption levels of electrical devices to save energy. The Energy
Star specification for computers requires that after 15-30 minutes of inactivity the
reduced power level be less than 15% of the maximum rated output of the power
supply. The approach adopted to meet the Energy Star requirement on the previous
generation of desktop platforms is to preserve an image of the system on:
the disk drive for fast reboot,
to do an orderly shut down and
to turn off the workstation.
The Power Management
improves the energy efficiency of your system. Internal subsystems enter a low-
power mode after a specified period of inactivity. Power is returned to subsystems
on an as-needed basis.
While in low-power mode, your system retains network awareness, such that it
responds to tasks directed to it.
The power-indicator LED in the center of the front panel power switch has three
states that indicate the power status of the system, as described in
TABLE C-12
LED Activity
LED off
LED blinking
LED on
Note – Energy Star power management for Sun Blade 1000 and Sun Blade 2000
workstations can be disabled by using the Dtpower (dt = "desktop") GUI. See
Section 9.4, "Disabling Power Management" on page 9-7.
™
software that is integrated with your Solaris software
Power-Indicator LED States
Meaning
System power is off or system is booting up.
All internal subsystems are in lowest possible power consumption
mode for this system.
Some hardware components and software drivers do not support
this system's lowest possible power consumption mode, when this
occurs, the power indicator LED will not blink.
Full power is on in one or more of the internal subsystems and
system self test has completed successfully.
TABLE C-12
Appendix C Functional Description
.
C-51