C H A P T E R 4 |
Power Management on Sun Hardware |
The United States Environmental Protection Agency created the Energy Star® guidelines for computer products to encourage the use of energy-efficient computer systems and to reduce air pollution associated with energy generation.
To meet these guidelines, Sun Microsystems, Inc. designs hardware to use power efficiently; also, it provides Power Management software with which to configure the power management settings. To reduce power consumption, your Sun workstation and devices are capable of entering a lower-power state when they have been inactive for a period of time.
This section supplements the Power Management section in the Solaris Common Desktop Environment: User's Guide, found in the Solaris 9 User Collection. The chapter covers the following topics:
Power Management software supports the sun4m and sun4u platform groups. Software features and defaults may vary between the two platform groups. Refer to the Solaris Common Desktop Environment: User's Guide in the Solaris 9 User Collection for more information when you identify the platform group that applies to your system.
Note - Power Management does not support the sun4c and sun4d platform groups. |
Note - The SPARCstation Voyager is a sun4m-architecture system, but it is not supported in this Solaris release. |
The SPARC architecture of a workstation determines which Power Management features are available. To determine your system's architecture, see TABLE 4-1. The default behavior in Power Management functions varies on systems, as described in TABLE 4-2.
Note - Some devices might not support all available Power Management features on a given architecture. |
This section describes a workaround to a limitation of the SPARCstation 4 when used with Power Management.
The AC accessory outlet on the SPARCstation 4 system is an unswitched outlet. The AC power switch does not control power flowing through the accessory outlet. If you connect a monitor to the accessory outlet, you cannot turn it off using the system unit power switch. Similarly, if you use Power Management software, the software cannot turn off the monitor automatically.
To conserve energy, consider using an Energy Star-compliant monitor. Sun offers a variety of Energy Star-compliant monitors in its standard SPARCstation 4 system configurations. This information does not apply to SPARCserver 4 configurations. The SPARCserver 4 includes a switched accessory outlet.
Copyright © 2004, Sun Microsystems, Inc. All rights reserved.