IBM 425162U Installation And User Manual

Contents

v Serial connector: Connect a 9-pin serial device to this connector. The serial portis shared with the integrated management module (IMM). The IMM can takecontrol of the shared serial port to redirect serial traffic, using Serial over LAN(SOL).v USB connectors: Connect a USB device, such as a USB mouse, keyboard, orother device to any of these connectors.v Ethernet connectors: Use either of these connectors to connect the server to anetwork. When you use the Ethernet 1 connector, the network can be sharedwith the IMM through a single network cable.v NMI button: Press this button to force a nonmaskable interrupt to themicroprocessor. You might have to use a pen or the end of a straightened paperclip to press the button. It allows you to blue screen the server and take amemory dump (use this button only when directed by the IBM service support).v PCI slot 1: Insert a low-profile PCI Express or PCI-X adapter into this slot.Standard models of the server come with two PCI Express riser assemblies. Youcan purchase an optional PCI-X riser-card assembly with bracket if you want toinstall a PCI-X adapter in this slot.v PCI slot 2: Insert a three-quarter length, full-height PCI Express or PCI-Xadapter into this slot. Standard models of the server come with two PCI Expressriser assemblies. You can purchase an optional PCI-X riser-card assembly withbracket if you want to install a PCI-X adapter in this slot.Server power featuresWhen the server is connected to an ac power source but is not turned on, theoperating system does not run, and all core logic except for the service processor(the integrated management module) is shut down; however, the server canrespond to requests to the service processor, such as a remote request to turn onthe server. The power-on LED flashes to indicate that the server is connected to acpower but is not turned on.Turning on the serverApproximately 5 seconds after the server is connected to ac power, one or morefans might start running to provide cooling while the server is connected to powerand the power-on button LED flashes quickly. Approximately 1 to 3 minutes afterthe server is connected to ac power, the power-control button becomes active (thepower-on LED flashes slowly), and one or more fans might start running to providecooling while the server is connected to power. You can turn on the server bypressing the power-control button.The server can also be turned on in any of the following ways:v If a power failure occurs while the server is turned on, the server will restartautomatically when power is restored.v If your operating system supports the Wake on LAN feature, the Wake on LANfeature can turn on the server.Note: When 4 GB or more of memory (physical or logical) is installed, somememory is reserved for various system resources and is unavailable to theoperating system. The amount of memory that is reserved for systemresources depends on the operating system, the configuration of the server,and the configured PCI devices.Turning off the serverWhen you turn off the server and leave it connected to ac power, the server canrespond to requests to the service processor, such as a remote request to turn on16 IBM System x3250 M3 Types 4251, 4252, and 4261: Installation and User’s Guide