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TheSystem Service Processor (often abbreviated asSSP) is aSPARC-based computer that is used to control theSun MicrosystemsEnterprise 10000 platform. The term SSP is often used to describe both thecomputer hardware and thesoftware that are necessary to accomplish this task.

The System Service Processor software provided for the following functionality:

• Environmental monitoring and automated domain-shutdown in the event of an out-of-bounds condition, such as a CPU getting too hot.
• The creation and destruction of domains
• The ability to boot domains
• Domain console device
• Dynamic Reconfiguration of domains, in which CPU, memory, and/or Input-Output boards are added to or removed from a running domain.
• Assign multiple paths to Input-Output devices for increased availability
• Monitor and display platformenvironmental statistics, such as the temperatures, currents, and voltages present on System Boards
• Monitor and control power flow to the platform components such as System Boards and Control Boards
• Power On Self Test and similar platform diagnostics
• Logging and Notification for various platform events
• The creation and destruction of Inter Domain Networks (IDNs) which allow forTCP/IP connectivity between domains, across the platform's centerplane.
• Support for a dual power-grid option

Severalutilities were provided with the SSP software packages, includinghostview, a program that provided anX Window System interface for platform maintenance, and severalCLI programs.

Normally, two System Service Processors were used per platform. One was configured asMain and the other asSpare. Only the SSP in the role ofMain could control the platform at any given time. Failover betweenMain andSpare was performed automatically by the SSP software.

The following systems were supported for use as System Service Processors:

• Sun SPARCstation 5
• Sun Ultra 5
• Sun Enterprise 250
• Sun Netra T1

• Baseboard Management Controller
• IBMSystem Guard, a service processor on most RS/6000 machines
• Intel Management Engine

• Sun Enterprise 10000 SSP 3.5 User Guide, October 2001

• Sun Enterprise 10000 SSP 3.5 Collection

• Sun Microsystems hardware
• Sun Microsystems software
• SPARC microprocessor products
• Computer-related introductions in 1997

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