Sun Microsystems T6300 manual Managing RAS Features and System Firmware

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C H A P T E R 2

Managing RAS Features and System Firmware

This chapter describes how to manage reliability, availability, and serviceability (RAS) features and system firmware, including the Sun Advanced Lights Out Manager (ALOM) system controller, and Automatic System Recovery (ASR). In addition, this chapter describes how to unconfigure and reconfigure a device manually, and introduces multipathing software.

This chapter contains the following sections:

■“Interpreting System LEDs” on page 20

■“Automatic System Recovery” on page 22

■“Unconfiguring and Reconfiguring Devices” on page 27

■“Multipathing Software” on page 29

Note – This chapter does not cover detailed troubleshooting and diagnostic procedures. For information about fault isolation and diagnostic procedures, refer to the Sun Blade T6300 Server Module Service Manual.

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Contents Sun Blade T6300 Server Module Administration Guide Please Recycle Contents Managing RAS Features and System Firmware OpenBoot Configuration Variables Vi Sun Blade T6300 Server Module Administration Guide April Figures Page Tables Sun Blade T6300 Server Module Administration Guide April How This Book Is Organized PrefaceShell Prompts Using Unix CommandsRelated Documentation Typographic ConventionsDocumentation, Support, and Training Third-Party Web SitesSun Welcomes Your Comments Communicating With the Server Configuring the System ConsoleUsing the System Console What the System Console DoesWhat the Alom System Controller Console Does Using the Serial Port Accessing the System ControllerTo Use the Serial Port Accessing the System Console Through a Terminal ServerActivating the Network Management Port Establish an Alom system controller sessionOpen a terminal session on the connecting device, and type To Access The System Console Through a Terminal ServerAccessing the System Console Through a TIP Connection To Access the System Console Through a TIP ConnectionA shell tool window on the Sun system, type If the number displayed by the uname -rcommand is less than Modifying the /etc/remote FileTo Modify the /etc/remote File Sun Blade T6300 Server Module Administration Guide April Network management or Serial management port Alom sc Prompt Access Through Multiple Controller Sessions Reaching the sc Prompt OpenBoot ok PromptGraceful Shutdown Methods to Reach the ok PromptAlom System Controller break or console Command Manual System ResetL1-A Stop-A Keys or Break Key Obtaining the ok Prompt For More Information About OpenBoot FirmwareTo Obtain the ok Prompt 2Ways of Accessing the ok PromptSystem Console OpenBoot Configuration Variable Settings Sun Blade T6300 Server Module Administration Guide April Managing RAS Features and System Firmware 1LED Behavior and Meaning Interpreting System LEDsType Controlling the Locator LEDAutoBoot Options Automatic System RecoveryError Handling Summary To Enable an Automatic Degraded BootSet the switches by typing Automatic System Recovery User Commands Reset ScenariosTo Enable Automatic System Recovery Enabling and Disabling Automatic System RecoveryAt the sc prompt, type At the ok prompt, typeObtaining Automatic System Recovery Information To Disable Automatic System RecoveryTo Obtain ASR Information Unconfiguring and Reconfiguring Devices To Unconfigure a Device ManuallyTo Reconfigure a Device Manually To Display System Fault Information Displaying System Fault InformationFor More Information on Multipathing Software Multipathing SoftwareStoring FRU Information To Store Information in Available FRU PROMsAt the sc prompt type OpenBoot Configuration Variables Variable-name Appendix a OpenBoot Configuration Variables Sun Blade T6300 Server Module Administration Guide April Index SymbolsProbe-ide, 14 probe-scsi, 14 probe-scsi-all, 14 showenv Setlocator sc command Sun Blade T6300 Server Module Administration Guide April