Stopping the SystemThis section discusses the various ways to stop the system.Attention: Using the power-on button on the operator panel or commands at the HMC to power off thesystem can cause unpredictable results in the data files. The next initial program load (IPL) will also takelonger to complete if all applications are not stopped beforehand.Stopping the System without a Hardware Management Console (HMC)AttachedAttention: When shutting down your system, shut down all applications first and then shut down theoperating system. The system power turns off and the system goes into standby mode when the operatingsystem is shut down. If you are shutting down your system due to an error or to make a repair, write downthe information displayed on the operator panel before turning off the system power. Before removingpower from the system, ensure that the shutdown process is complete. Failure to do so can result in theloss of data. Some option-installation procedures do not require the system to be stopped for installation.The option-installation procedures in this chapter will direct you here if stopping the system is required.1. Log in to the system as root user.2. Stop all applications that are running on the system.3. At the command line, type one of the following commands:v If your system is running AIX, type shutdownv If your system is running Linux, type shutdown now -h4. After you shut down the operating system, set the power switches of any attached devices to Off.Stopping the System with an HMC Attached and AIX InstalledThe HMC user interface provides a power-off function to turn off the power to the system.AIX provides hot-swap procedures for adapters and devices that support hot-swap removal andinstallation. Individual power components and fans can be serviced with the power on for power systemsequipped with redundant power and cooling. Before servicing the system, check removal, replacement,and installation procedures.If the system is running AIX, typing the shutdown command causes the system to shut down and poweroff. Check with the system administrator before using this command. If you cannot use this method, youcan power off the system by pressing the power-on button on the operator panel or typing the appropriatecommand at the HMC.Stopping the System with an HMC Attached and Linux InstalledThe HMC user interface provides a power-off function to turn off the power to the system.Linux does not provide hot-swap procedures for adapter and device removal and installation. The systempower must be turned off to service an adapter or device. Individual power components and fans may beserviced with power on for power systems equipped with redundant power and cooling. Before servicingthis system, check removal and installation procedures.If the system is operating under Linux, typing the shutdown now -h command causes the system to shutdown and power off. Check with the system administrator before using this command. If you cannot usethis method, you can power off the system by pressing the power-on button on the operator panel ortyping the appropriate command at the HMC.282 EserverpSeries 615 Service Guide
