Sun Microsystems T6300 manual For More Information on Multipathing Software

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Adding the –voption displays additional information,

sc> showfaults	-v
ID Time	FRU	Fault
0 MAY 20	10:47:32 FT0.F2	SYS_FAN at FT0.F2 has FAILED.

For more information about the showfaults command, refer to the Advanced Lights Out Management (ALOM) CMT v1.3 Guide.

Multipathing Software

Multipathing software enables you to define and control redundant physical paths to I/O devices, such as storage devices and network interfaces. If the active path to a device becomes unavailable, the software can automatically switch to an alternate path to maintain availability. This capability is known as automatic failover. To take advantage of multipathing capabilities, you must configure the server with redundant hardware, such as redundant network interfaces or two host bus adapters connected to the same dual-ported storage array.

For your server, three different types of multipathing software are available:

■Solaris IP Network Multipathing software provides multipathing and load-balancing capabilities for IP network interfaces.

■VERITAS Volume Manager (VVM) software includes a feature called Dynamic Multipathing (DMP), which provides disk multipathing as well as disk load balancing to optimize I/O throughput.

■Sun StorageTek™ Traffic Manager is an architecture fully integrated within the Solaris OS (beginning with the Solaris 8 release) that enables I/O devices to be accessed through multiple host controller interfaces from a single instance of the I/O device.

For More Information on Multipathing Software

For instructions on how to configure and administer Solaris IP Network Multipathing software, consult the IP Network Multipathing Administration Guide provided with your specific Solaris release.

Chapter 2 Managing RAS Features and System Firmware 29

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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 ConventionsThird-Party Web Sites Documentation, Support, and TrainingSun Welcomes Your Comments Communicating With the Server Configuring the System ConsoleWhat the System Console Does Using the System ConsoleWhat the Alom System Controller Console Does Using the Serial Port Accessing the System ControllerEstablish an Alom system controller session Accessing the System Console Through a Terminal ServerTo Use the Serial Port Activating the Network Management PortOpen a terminal session on the connecting device, and type To Access The System Console Through a Terminal ServerTo Access the System Console Through a TIP Connection Accessing the System Console Through a TIP ConnectionA shell tool window on the Sun system, type Modifying the /etc/remote File If the number displayed by the uname -rcommand is less thanTo 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 PromptManual System Reset Alom System Controller break or console CommandL1-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 RecoveryTo Enable an Automatic Degraded Boot Error Handling SummarySet the switches by typing Automatic System Recovery User Commands Reset ScenariosAt the ok prompt, type Enabling and Disabling Automatic System RecoveryTo Enable Automatic System Recovery At the sc prompt, typeTo Disable Automatic System Recovery Obtaining Automatic System Recovery InformationTo Obtain ASR Information To Unconfigure a Device Manually Unconfiguring and Reconfiguring DevicesTo Reconfigure a Device Manually To Display System Fault Information Displaying System Fault InformationFor More Information on Multipathing Software Multipathing SoftwareTo Store Information in Available FRU PROMs Storing FRU InformationAt 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