C H A P T E R

C H A P T E R 5

Power Management on Sun Hardware

The United States Environmental Protection Agency has 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 trademark software with which to configure the power management settings. In order 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 Using Power Management manual in the Solaris 9 User Collection.

Supported Platforms and System Distinctions

Power Management software supports the sun4m and sun4u platform groups. Software features and defaults may vary between the two platform groups. Refer to Using Power Management in the Solaris 9 User set 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.

TABLE 5-1 Platform Names and Groups Supported by Power Management
Sun System Name	Platform Name	Platform Group
SPARCstation 4	SUNW, SPARCstation-4	sun4m
SPARCstation 5	SUNW, SPARCstation-5	sun4m
SPARCstation 10	SUNW, SPARCstation-10	sun4m
SPARCstation 10SX	SUNW, SPARCstation-10, SX	sun4m
SPARCstation 20	SUNW, SPARCstation-20	sun4m
SPARCstation LX	SUNW, SPARCstation-LX	sun4m
SPARCstation LX+	SUNW, SPARCstation-LX+	sun4m
SPARCclassic	SUNW, SPARCclassic	sun4m
SPARCclassic X	SUNW, SPARCclassic-X	sun4m
Ultra 1 (all models)	SUNW, Ultra-1	sun4u
Ultra 5	SUNW, Ultra-5	sun4u
Ultra 10	SUNW, Ultra-10	sun4u
Ultra 30	SUNW, Ultra-30	sun4u
Ultra 60	SUNW, Ultra-60	sun4u
Ultra 80	SUNW,Ultra-80	sun4u
Ultra 450	SUNW, Ultra-4	sun4u
Ultra 2 Creator (all models)	SUNW, Ultra-2	sun4u
Sun Enterprise 1 Model 140	SUNW, Ultra-1	sun4u
Sun Enterprise 1 Model 170	SUNW, Ultra-1	sun4u
Sun Enterprise 1 Model 170E	SUNW, Ultra-1	sun4u
Sun Enterprise 2 Model 1300	SUNW, Ultra-2	sun4u
Sun Enterprise 2 Model 2300	SUNW, Ultra-2	sun4u
Sun Blade 100	SUNW,Sun-Blade-100	sun4u
Sun Blade 1000	SUNW,Sun-Blade-1000	sun4u

Note Note - The SPARCstation trademark Voyager is a sun4m-architecture system, but it is not supported in this Solaris release.

System Architecture Distinctions and Default Settings

The SPARC architecture of a workstation determines which Power Management features are available. To determine your system's architecture, see . The default behavior in Power Management functions varies on systems, as described in .

TABLE 5-2 Supported Power Management Features in Different SPARC Architectures
Power Management Features	sun4m	sun4u (Ultra) (Energy Star 2.0)	sun4u (Sun Blade) (Energy Star 3.0)	Servers
Display PM Available	Yes	Yes	Yes	Yes
Display PM by Default	Yes	Yes	Yes	Yes
Device PM Available	No	No	Yes	No
Device PM by Default	N/A	N/A	Yes	N/A
Suspend-Resume Available	Yes	Yes	Yes	No
Suspend-Resume by Default	No	Yes	No	N/A
AutoShutDown Available	No	Yes	Yes	No
AutoWakeup by Default	N/A	Yes	No	N/A

Note Note - Some devices may not support all available Power Management features on a given architecture.

SPARCstation 4 Issues

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.