Sun Netra X4250 Server Service Manual

This chapter includes the following topics:

• Product Description
• Server Diagnostics Overview
• Memory Configuration and Fault Handling

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1.1 Product Description

The Sun Netra X4250 server (FIGURE 1-1) is a 2-rack unit (2U) server.

FIGURE 1-1 Sun Netra X4250 Server

The Sun Netra X4250 server is a scalable, reliable, high-performance, entry-level server, optimized for enterprise data centers. The server offers the following key features:

• Single or dual Intel® Xeon® L5408 quad core, 2.13 GHz processors for high-throughput and energy savings.
• High levels of system uptime through the processor and memory reliability, availability, and serviceability (RAS) features, coupled with redundancy of some system components, and support for hardware RAID (0+1).
• A space efficient, rack-optimized form factor 2U chassis.
• Unified server management though the use of the Sun Integrated Lights Out Manager (ILOM) system controller interface. ILOM integrates and manages x64 platforms with the same tool set, and in heterogeneous environments, using industry-standard element management tools and enterprise frameworks.

1.1.1 Features at a Glance

TABLE 1-1 lists the features of the Sun Netra X4250 server.

1.1.2 Chassis Controls, LEDs, and Connectors

The following figures show the physical characteristics of the front and rear panels of the Sun Netra X4250 server (FIGURE 1-2, FIGURE 1-3, and FIGURE 1-5).

FIGURE 1-2 Front Panel With DVD

FIGURE 1-3 Front Panel With Bezel Removed and Two HDDs

FIGURE 1-4 Front Panel With Bezel Removed and Four HDDs

FIGURE 1-5 Rear Panel Cable Connectors and LEDs

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1.2 Server Diagnostics Overview

There are a variety of diagnostic tools, commands, and indicators you can use to monitor and troubleshoot a server:

• LEDs - These indicators provide a quick visual notification of the status of the server and of some of the FRUs.
• ILOM firmware - This system firmware runs on the service processor. In addition to providing the interface between the hardware and OS, ILOM also tracks and reports the health of key server components. ILOM works closely with POST and Solaris Predictive Self-Healing technology to keep the system up and running even when there is a faulty component.
• Power-on self-test (POST) - POST performs diagnostics on system components upon system power up and resets to ensure the integrity of those components. POST messages are displayed and logged in the Basic Input/Output System (BIOS) event logs. POST works with ILOM to take faulty components offline if needed.
• Solaris OS Only
• Solaris OS Predictive SelfHealing (PSH) - This technology continuously monitors the health of the CPU and memory, and works with ILOM to take a faulty component offline if needed. The Predictive SelfHealing technology enables Sun systems to accurately predict component failures and mitigate many serious problems before they occur.
• Log files and console messages - These items provide the standard Solaris OS log files and investigative commands that can be accessed and displayed on the device of your choice.
• SunVTS - An application that exercises the system, provides hardware validation, and discloses possible faulty components with recommendations for repair.

The LEDs, ILOM, Solaris OS PSH, and many of the log files and console messages are integrated. For example, a fault detected by the Solaris software will display the fault, log it, pass information to ILOM where it is logged, and depending on the fault, might light one or more LEDs.

1.2.1 Server LEDs

These LEDs provide a quick visual check of the state of the system.

1.2.1.1 Front and Rear Panel LEDs

The seven front panel LEDs (FIGURE 1-6) are located in the upper left corner of the server chassis. Three of these LEDs are also provided on the rear panel (FIGURE 1-7).

FIGURE 1-6 Location of the Bezel Server Status and Alarm Status LEDs

FIGURE 1-7 Rear Panel LEDs

TABLE 1-2 lists and describes the front and rear panel LEDs.

1.2.1.2 Hard Drive LEDs

The hard drive LEDs (FIGURE 1-8) are located on the front of each hard drive that is installed in the server chassis.

FIGURE 1-8 Hard Drive LEDs

1.2.1.3 Power Supply LEDs

The power supply LEDs (FIGURE 1-9) are located on the rear of each power supply.

FIGURE 1-9 Power Supply LEDs

1.2.1.4 Ethernet Port LEDs

The ILOM management Ethernet port and the four 10/100/1000 Mbps Ethernet ports each have two LEDs, as shown in FIGURE 1-10 and described in the associated Figure Legend.

FIGURE 1-10 Ethernet Port LEDs

1.2.2 Sun Integrated Lights Out Manager (ILOM)

The Sun Integrated Lights Out Manager (ILOM) is system management firmware that is preinstalled on some Sun server platforms. ILOM enables you to actively manage and monitor components installed in your server system. With ILOM, you can monitor and manage your system by viewing hardware configurations, monitoring system information, managing system alerts, and more. ILOM provides a browser-based web interface and a command-line interface, as well as an SNMP user interface and an IPMI user interface. ILOM automatically initializes as soon as power is applied to your system. ILOM will continue to run regardless of the state of the host operating system, making it a “lights-out” management system.

Some key features of ILOM include:

• Runs on its own processor and resources
• Allows for management of the server without consuming system resources
• Continues to provide management using standby power even when the server is powered off
• Provides an isolated management network separate from the data network
• Provides a concise view of hardware inventory and environmental information
• Provides the ability to control power, manage components, and access the host console
• Serves as an integration point for other management tools
• Enables the download of service processor (SP) firmware and BIOS changes
• Manages the inventory of hot-pluggable system components

ILOM enables you to remotely run diagnostics, such as power-on self-test (POST), that would otherwise require physical proximity to the server’s serial port. You can also configure ILOM to send email alerts of hardware failures, hardware warnings, and other events related to the server or to ILOM.

The service processor runs independently of the server, using the server’s standby power. Therefore, ILOM continues to function when the server operating system goes offline or when the server is powered off.

For information about configuring and using the ILOM service processor, refer to the latest Sun Integrated Lights Out Manager (ILOM) 2.0 User’s Guide and the Sun Integrated Lights Out Manager 2.0 Supplement for the Sun Netra X4250 Server. These documents are available online at:

http://docs.sun.com/app/docs/prod/server.nebs

1.2.3 POST and BIOS

For information about configuring BIOS, POST testing, POST codes, POST code checkpoints, and console redirection, see Appendix B, Configuring BIOS and POST.

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1.3 Memory Configuration and Fault Handling

A variety of features play a role in how the memory subsystem is configured and how memory faults are handled. Understanding the underlying features helps you identify and repair memory problems. This section describes how the memory is configured and how the server deals with memory faults.

1.3.1 Memory Configuration

In the server memory there are 16 slots that hold DDR-2 memory FB-DIMMs in the following FB-DIMM sizes:

• 1 Gbyte (maximum of 16 Gbyte)
• 2 Gbyte (maximum of 32 Gbyte)
• 4 Gbyte (maximum of 64 Gbyte)

FB-DIMMs are installed in groups of 8, called ranks (ranks 0 and 1). At minimum, rank 0 must be fully populated with eight FB-DIMMs of the same capacity. A second rank of FB-DIMMs of the same capacity can be added to fill rank 1.

See Replacing FB-DIMMs for instructions about adding memory to a server.

1.3.2 Memory Fault Handling

The server uses an advanced ECC technology, called chipkill, that corrects up to 4 bits in error on nibble boundaries, as long as all of the bits are in the same DRAM. If a DRAM fails, the FB-DIMM continues to function.

^{1 (TableFootnote) PCIe and PCI-X specifications described in this table list the physical requirements for PCI cards. Additional support capabilities (such as device drivers) must also be provided for a PCI card to function in the server. Refer to the specifications and documentation for a given PCI card to determine if the required drivers are provided that enable the card to function in this server.}

Sun Netra X4250 Server Service Manual

820-4056-11

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