NEC LC1400 User Manual

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User’s Guide
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User’s Guide
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EXPRESS5800 LC1400 SERIES
User's Guide
Using Your NEC Versa 1
The information disclosed in this document, including all designs and related materials, is the valuable property of NEC Computer Systems Division, Packard Bell NEC, Inc. (hereinafter “NECCSD”) and/or its licensors. NECCSD and/or its licensors, as appropriate, reserve all patent, copyright and other proprietary rights to this document, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others.
The NECCSD product(s) discussed in this document are warranted in accordance with the terms of the Warranty Statement accompanying each product. However, actual performance of each such product is dependent upon factors such as system configuration, customer data, and operator control. Since implementation by customers of each product may vary, the suitability of specific product configurations and applications must be determined by the customer and is not warranted by NECCSD.
To allow for design and specification improvements, the information in this document is subject to change at any time, without notice. Reproduction of this document or portions thereof without prior written approval of NECCSD is prohibited.
Trademarks
INTEL is a registered trademark of Intel Corporation. MS-DOS is a registered trademark of Microsoft Corporation. Pentium is a registered trademark of Intel Corporation. All other product, brand, or trade names used in this publication are the trademarks or registered trademarks of their respective
trademark owners.
PN: 102177
First Issue — September 1998
Copyright 1998
NEC Computer Systems Division
Packard Bell NEC, Inc.
1 Packard Bell Way
Sacramento, CA 95828-0903
All Rights Reserved

Contents

1 System Overview
Overview.............................................................................................................................. 1-2
System Chassis..................................................................................................................... 1-5
Power Supply........................................................................................................................ 1-7
Peripheral Bays ..................................................................................................................... 1-7
SAF-TE Board ...................................................................................................................... 1-7
System Board Features.......................................................................................................... 1-8
Pentium II Processor................................................................................................... 1-9
System Memory .......................................................................................................... 1-9
I/O Expansion Slots ...................................................................................................1-10
Real-Time Clock/Calendar .........................................................................................1-11
BIOS .........................................................................................................................1-11
IDE Controller...........................................................................................................1-11
Network Controller....................................................................................................1-11
SCSI Controller .........................................................................................................1-12
Video Controller........................................................................................................1-12
Peripheral Controller..................................................................................................1-13
Serial Ports ..................................................................................................... 1-13
Parallel Port.................................................................................................... 1-13
External Device Connectors.......................................................................................1-13
System Board Management Controller (BMC)...........................................................1-13
System Security...................................................................................................................1-14
Security with Mechanical Locks and Monitoring ........................................................1-14
Software Locks via the System Setup Utility..............................................................1-14
2 Setting Up the System
Overview.............................................................................................................................. 2-2
Selecting a Site ..................................................................................................................... 2-2
Unpacking the System........................................................................................................... 2-3
Rack-Mount Subsystem Assembly........................................................................................ 2-4
Before You Begin....................................................................................................... 2-4
Static Precautions........................................................................................................ 2-4
Assembly.................................................................................................................... 2-5
Getting Familiar with the System .......................................................................................... 2-8
Front View with Front Door Closed ............................................................................ 2-8
Front View with Front Door Opened........................................................................... 2-9
Rear View..................................................................................................................2-11
Status Indicator LED Descriptions .............................................................................2-12
Making Connections............................................................................................................2-14
Setting the Line Voltage.......................................................................................................2-15
Connecting the Power Cord(s)..............................................................................................2-17
Powering On Your System...................................................................................................2-18
Contents iii
3 Configuring Your System
Configuring Your System...................................................................................................... 3-2
BIOS Setup Utility................................................................................................................ 3-3
Using the BIOS Setup Utility...................................................................................... 3-3
BIOS Setup Configuration Settings............................................................................. 3-4
Main Menu................................................................................................................. 3-5
Primary/Secondary IDE Master and Slave Submenu ....................................... 3-6
Keyboard Submenu......................................................................................... 3-7
Advanced Menu .......................................................................................................... 3-7
PCI Configuration Submenus.......................................................................... 3-8
PCI Device, Slot 1 - Slot 7 Submenus ............................................................. 3-8
Integrated Peripheral Configuration Submenu................................................. 3-9
Advanced Chipset Control .............................................................................. 3-10
Security Menu............................................................................................................3-10
Security menu (Continued).........................................................................................3-11
Server Menu ..............................................................................................................3-12
System Management Submenu........................................................................ 3-13
Server Management Information Submenu...................................................... 3-14
Console Redirection Submenu ........................................................................ 3-14
Boot Menu .................................................................................................................3-15
Boot Device Priority Submenu........................................................................ 3-15
Hard Drive Submenu ...................................................................................... 3-16
Removable Devices ........................................................................................ 3-16
Exit Menu..................................................................................................................3-17
Symbios Configuration Utility .............................................................................................3-18
Running the Symbios Configuration Utility................................................................3-18
Changing the Adapter and Device Configurations ......................................................3-19
Optional RAID Controllers ..................................................................................................3-22
Factory Installed Controllers......................................................................................3-22
Add-on Controller ......................................................................................................3-23
DACCF Configuration Utility....................................................................................3-23
Configuring System Board Jumpers.....................................................................................3-24
Before You Begin......................................................................................................3-24
Moving System Board Jumpers ..................................................................................3-26
Resetting the CMOS NVRAM...................................................................................3-27
Clearing and Changing the Passwords........................................................................3-27
Recovering the BIOS.................................................................................................3-27
Boot Block Write Protect...........................................................................................3-27
BMC Forced Update Mode ........................................................................................3-28
4 Upgrading Your System
General Information.............................................................................................................. 4-2
Static Precautions.................................................................................................................. 4-2
Preparing Your System for Upgrade ...................................................................................... 4-3
Equipment Log ..................................................................................................................... 4-3
Opening the Front Door ........................................................................................................ 4-3
Removing a Side Panel ......................................................................................................... 4-4
Installing a Side Panel........................................................................................................... 4-5
Modifying the System Board................................................................................................. 4-6
Replacing the Real-time Clock Battery........................................................................ 4-6
Replacing the Pentium II Processor............................................................................. 4-8
Replacing the SECC Version .......................................................................... 4-9
Replacing the SEPP Version ........................................................................... 4-11
iv Contents
Replacing the SECC2 Version......................................................................... 4-13
DIMMs......................................................................................................................4-15
Memory DIMM Configurations ...................................................................... 4-16
Installing DIMMs ........................................................................................... 4-17
Removing DIMMs.......................................................................................... 4-18
Option Boards......................................................................................................................4-19
Installation Considerations.........................................................................................4-19
Installing an Option Board .........................................................................................4-20
Removing an Option Board ........................................................................................4-23
Installing a RAID Controller Board ......................................................................................4-23
Hard Disk Drives.................................................................................................................4-24
Installing or Swapping a Hard Disk Drive in a Hot-swap Bay .....................................4-25
Installing or Swapping a Hard Disk Drive ..................................................................4-26
Removable Media Devices ...................................................................................................4-29
Installing a 5.25-Inch Media Device...........................................................................4-30
Removing a 5.25-Inch Device....................................................................................4-35
5 Problem Solving
Problem Solving ................................................................................................................... 5-2
Static Precautions.................................................................................................................. 5-2
Troubleshooting Checklists................................................................................................... 5-3
Initial System Startup.................................................................................................. 5-3
Running New Application Software............................................................................ 5-4
After System Has Been Running Correctly.................................................................. 5-5
Additional Troubleshooting Procedures................................................................................. 5-6
Preparing the System for Diagnostic Testing............................................................... 5-6
Monitoring POST ....................................................................................................... 5-7
Verifying Proper Operation of Key System Indicators................................................. 5-8
Confirming Loading of the Operating System ............................................................. 5-8
Specific Problems and Corrective Actions............................................................................. 5-9
Power LED Does Not Light ........................................................................................ 5-9
Incorrect or No Beep Code .........................................................................................5-10
No Characters Appear on Screen................................................................................5-10
Characters are Distorted or Incorrect..........................................................................5-11
System Cooling Fans Do Not Rotate..........................................................................5-11
Diskette Drive Activity LED Does Not Light.............................................................5-11
CD-ROM Drive Activity Light Does Not Light ..........................................................5-12
Problems with Application Software..........................................................................5-12
Press F2 Key to Enter Setup: Prompt Does Not Display ............................................5-12
Enable F2 Prompt by Using SSU .................................................................... 5-13
Enable F2 Prompt by Changing a Jumper and Using SSU ............................... 5-14
Bootable CD-ROM Is Not Detected...........................................................................5-14
Problems with the Network..................................................................................................5-15
PNP Installation Tips...........................................................................................................5-16
BIOS User’s Information .....................................................................................................5-16
Error and Status Messages .........................................................................................5-16
POST Error Codes and Messages...............................................................................5-20
Contents v
A System Cabling
System Cabling .....................................................................................................................A-2
Before You Begin.................................................................................................................A-2
Static Precautions.................................................................................................................. A-2
Standard Configuration......................................................................................................... A-3
RAID Configuration .............................................................................................................A-6
B System Setup Utility
System Setup Utility (SSU) ...................................................................................................B-2
Creating SSU Diskettes.........................................................................................................B-3
Running the SSU .................................................................................................................. B-4
Customizing the SSU..................................................................................................B-5
Launching a Task........................................................................................................B-6
Resource Configuration Add-in (RCA) Window .........................................................B-7
Defining an ISA Card ................................................................................................. B-8
Adding and Removing ISA Cards ...............................................................................B-9
Modifying Resources................................................................................................B-10
Recommended Resource Settings ..............................................................................B-11
System Resource Usage............................................................................................B-12
Multiboot Add-in (MBA) Window ............................................................................B-13
Password Administration (PWA) Window ................................................................B-13
System Event Log (SEL) Window.............................................................................B-14
Exiting the SSU ..................................................................................................................B-15
C Emergency Management Port
Emergency Management Port ............................................................................................... C-2
How the EMP Works............................................................................................................ C-3
EMP Requirements and Configurations.................................................................................C-5
Setting Up the Server for the EMP........................................................................................C-6
System Management Submenu....................................................................................C-6
Console Redirection Submenu .................................................................................... C-7
Main EMP Window.............................................................................................................. C-7
Toolbar....................................................................................................................... C-7
Status Bar................................................................................................................... C-8
EMP Main Menu ........................................................................................................C-8
Server Control Operations ...........................................................................................C-9
Connect .......................................................................................................... C-9
Power On/Off .................................................................................................C-10
Reset...............................................................................................................C-11
Phonebook..........................................................................................................................C-12
Management Plug-ins .........................................................................................................C-13
SEL Viewer..............................................................................................................C-13
SEL Viewer Menu Options.............................................................................C-14
Sensor Type Codes .........................................................................................C-15
Using the Sensor Type Code Table..................................................................C-15
SDR Viewer .............................................................................................................C-17
SDR Viewer Menu Options.............................................................................C-18
FRU Viewer..............................................................................................................C-18
FRU Viewer Menu Options.............................................................................C-19
vi Contents
D System Status Hardware Support Information
System Status Hardware Support Information .......................................................................D-2
Glossary
Equipment Log
Index
Contents vii

Using This Guide

The LC1400 User’s Guide provides a quick reference to information about your system. Its goal is to familiarize you with your system and the tasks necessary for system configuring and upgrading.
This guide contains the following information:
n Chapter 1,System Overview” provides an overview of your system and describes your
system’s major system components. See this chapter to familiarize yourself with your system.
n Chapter 2, “Setting Up Your System” tells you how to select a site, unpack the system,
assemble the rack-mount subsystem, make cable connections, and power on your system.
n Chapter 3, “Configuring Your System” tells you how to configure the system and
provides instructions for running the BIOS Setup Utility and the Symbios Configuration Utility, which is used to configure SCSI devices in your system. This chapter also provides information on system board jumper settings.
n Chapter 4, “Upgrades and Options” provides you with instructions for replacing the
processor and upgrading your system with optional memory, options cards, and peripheral devices.
n Chapter 5, “Problem Solving” contains helpful information for solving problems that
might occur with your system.
n Appendix A, “System Cabling” includes cabling information for the onboard SCSI
controller, the onboard IDE controllers, and the optional RAID controllers.
n Appendix B, “System Setup Utility” provides information for configuring onboard
resources and add-in boards. It also provides information on viewing the system event log.
n Appendix C, “Emergency Management Port” provides information on a feature that
provides an interface to the Emergency Management Port (EMP) Console Manager. This interface allows remote server management via a modem or direct connection.
n Appendix D, “System Status Hardware Support Information” helps you identify a
system status hardware item indicated by one of several software monitoring components.
n “Glossary” defines the standard acronyms and technical terms used in this manual. n “Equipment Log” provides you with a sample equipment log for documenting the
system configuration and future updates you may make to your system.
Using This Guide vii
Text Conventions
This guide uses the following text conventions. Warnings, cautions, and notes have the following meanings:
Warnings alert you to situations that could result in serious personal injury or loss
of life.
Cautions indicate situations that can damage the system hardware or software.
Note: Notes give important information about the material being described.
n Names of keyboard keys are printed as they appear on the keyboard. For example, Ctrl,
Alt, or Enter.
WARNING
CAUTION
n Text or keystrokes that you enter appear as boldface type. For example, type abc123 and
press ENTER.
n File names are printed in uppercase letters. For example, AUTOEXEC.BAT.
viii Using This Guide
Related Documents
In addition to this guide, the following system documentation is included with your server either as electronic files on EXPRESSBUILDER or as paper copy shipped with your server.
n System Release Notes
Release Notes provide you with the latest information about your system. This information was not available at the time your user’s guide was developed.
n Getting Started Sheet
The Getting Started Sheet provides several easy-to-follow steps to become familiar with your server documentation and to complete your installation successfully.
n Network Operating System Configuration Guide
This guide contains supplemental instructions needed to install and configure your server Windows NT v4.0, Novell NetWare v3.12, Novell NetWare v4.11, and Santa Cruz Operation (SCO) OpenServer Release 5.04, and UNIXWare 7.0 Network Operating Systems. This document is intended to complement the more detailed procedural documents available from the vendor of the network operating system.
Using This Guide ix
Safety Notices
n Caution: To reduce the risk of electric shock which could cause personal injury, follow
all safety notices. The symbols shown are used in your documentation and on your equipment to indicate safety hazards.
n Warning: Lithium batteries can be dangerous. Improper handling of lithium batteries
may result in an explosion. Dispose of lithium batteries as required by local ordinance or as normal waste if no local ordinance exists.
n Warning: The detachable power supply cords are intended to serve as the disconnect
devices.
n Warning: This equipment uses 3-wire, grounded power cords. To prevent electrical
hazards, do not remove or defeat the ground prong on the power cords. Replace a power cord if it gets damaged. Contact your dealer for an exact replacement.
n Warning: The DC push-button on/off switch on the front panel does not turn off the
system AC power. Also, +5vdc is present on the system board whenever the AC power cords are connected between the system and an AC outlet. Before doing the procedures in this manual, make sure that your system is powered off and unplug the AC power cords from the back of the chassis. Failure to disconnect power before opening your system can result in personal injury and equipment damage.
In the U.S.A. and Canada, the power cord must be a UL-listed detachable power cord (in Canada, CSA-certified), type ST or SJT, 16 AWG, 3-conductor, provided with a molded-on NEMA type 5-15 P plug cap at one end and a molded-on cord connector body at the other end. The cord length must not exceed 9 feet (2.7 meters).
Outside the U.S.A. and Canada, the plug must be rated for 250 VAC, 10 amp minimum, and must display an international agency approval marking. The cord must be suitable for use in the end-user country. Consult your dealer or the local electrical authorities if you are unsure of the type of power cord to use in your country. The voltage change occurs via a switch in the power supply.
n Warning: Under no circumstances should the user attempt to disassemble the power
supply. The power supply has no user-replaceable parts. Inside the power supply are hazardous voltages that can cause serious personal injury. A defective power supply must be returned to your dealer.
x Using This Guide
Safety Notices for Users Outside of the U.S.A. and Canada
n PELV (Protected Extra-Low Voltage) Integrity: To ensure the extra-low voltage
integrity of the equipment, connect only equipment with mains-protected electrically­compatible circuits to the external ports.
n Remote Earths: To prevent electrical shock, connect all local (individual office)
computers and computer support equipment to the same electrical circuit of the building wiring. If you are unsure, check the building wiring to avoid remote earth conditions.
n Earth Bonding: For safe operation, only connect the equipment to a building supply
that is in accordance with current wiring regulations in your country. In the U.K., those regulations are the IEE.
Using This Guide xi
Care and Handling
Use the following guidelines to properly handle and care for your system.
Protect the system from extremely low or high temperatures. Let the system warm (or cool) to room temperature before using it.
Keep the system away from magnetic forces.
Keep the system dry. Do not wash the system with a wet cloth or pour fluid into it.
Protect the system from being bumped or dropped.
Check the system for condensation. If condensation exists, allow it to evaporate before powering on the system.
Keep the system away from dust, sand, and dirt.
xii Using This Guide

System Overview

n Overview n System Chassis n Power Supply n Peripheral Bays n SAF-TE (SCSI Accessed Fault Tolerant Enclosure)
Board
n System Board Features n System Security
1
Overview
This server is a modular, single high-performance processor server based on the Intel Pentium® II chip set. The combination of compute performance, memory capacity, and integrated I/O provides a high performance environment for many server market applications. These range from large corporations supporting remote offices to small companies looking to obtain basic connectivity capability such as file and print services, e -mail, web access, web site server, etc.
This server is also conveniently housed and available as a tower-based system or as a rack-mount system (fits into a standard IAE 19-inch rack assembly).
1-2 System Overview
Tower-Based System Front View
Rack-Mount System Front View
This server system is designed for minimum downtime. To this end, the server includes or has the options to include the following:
n Optional power system redundancy; in a system configured with two power supplies,
the system will continue to operate with a single power supply failure.
n Self-contained power supply units that can be easily installed or removed from the
back of the chassis.
n SCSI drive bays accessible from the front of the chassis. n Hot-swap SCSI disk drive backplane; a failed drive can be removed and a new drive
installed without system power being turned off, if an optional Redundant Array of Independent Disks (RAID) controller is installed.
n High degree of SCSI disk fault tolerance and advanced disk array management
features through the use of RAID technology, if an optional RAID controller is installed.
n Chassis that supports up to two power supplies. The second power supply can be
added to provide redundant power.
System Overview 1-3
As application requirements increase, you can expand your server with additional memory, add-in boards and peripheral devices: tape devices, CD-ROM, diskette drives and hard disk drives.
Your server features the following major components:
n Single high-performance Pentium II processor. n 32 MB to 768 MB of memory, using up to three DIMMs. n Four PCI expansion slots for add-in boards (one slot shared with an ISA slot). 1x32
bit PCI bus.
n Two ISA expansion slots for add-in boards (one slot shared with a PCI slot).
Embedded PC-compatible support (serial, parallel, mouse, keyboard, diskette, and Plug and Play features).
n Integrated onboard Cirrus Logic CL-GD5480 Super Video Graphics Array (SVGA)
controller with 2 MB of video memory.
n Dual Symbios SYM53C875 SCSI controllers providing ultra wide and legacy
narrow SCSI interfaces.
n Integrated onboard Network Interface Controller (NIC), an Intel 82558 PCI LAN
controller for 10 or 100 Mbps TX Fast Ethernet networks. RJ-45 Ethernet connector.
n Dual Channel enhanced IDE controller n Chassis that holds up to 12 drives: seven hot-swap bays for ultra-2 (LVD) SCSI hard
drives; five removable media expansion bays with a CD-ROM reader already installed in one bay; and a half-height bay with a diskette drive already installed in the bay.
n Seven hot-swap SCSI hard disk drive bays accessible from the front of the chassis.
The bays are secured behind a lockable front door were the drives can be swapped in or out of the system without powering it down, if RAID is configured in the system.
n SCSI backplane is Ultra-2 (LVD) ready. n Integrated dual Universal Serial Bus (USB) ports. n One standard power supply module with a slot available for an additional redundant
power supply module. When an additional power supply module is installed, both the standard and additional redundant power supply module slots become hot swappable.
n Hardware monitors (temperature, fans, and voltage) and software monitors to
indicate failures.
1-4 System Overview
n Mechanical: Keylock at the front of the chassis and two metal padlocks loops (one at
the back of each side panel). Three intrusion sensor switches for the front, left and right side of the chassis. Two of the three intrusion sensor switches (left and right side intrusion sensor switches only) become power inter-lock switches when two power supplies are installed.
System Chassis
The system chassis is an easy-to-expand, fabricated metal structure. The major system components are shown in the following illustrations.
System Chassis (Left Side View)
A. Removable media bays (2) B. Speaker/Switch assembly C. System board D. Front input fan E. Rear exhaust fan F. Second rear exhaust fan (Optional) G. Intrusion/Interlock switch - Side Covers H. Intrusion switch - Front Cover
System Overview 1-5
System Chassis (Right Side View)
A. CD-ROM drive B. Removable media bay C. 1.44 MB 3.5"diskette drive D. SAF-T-E board E. SCSI disk drive bays (7) F. SCSI backplane board G. Fans, behind SCSI disk drive bays (2 standard plus 1 optional) H. Optional fan I. Intrusion/Interlock switch J. Standard power supply K. Power supply module slots (one standard power supply slot
and one optional power supply slot) L. Power supply status LED* M. DC power LED* N. Power available switch*
1-6 System Overview
O. Power supply distribution board*
*Part provided with optional power supply kit.
Power Supply
The ATX300 watt power supply is switch-selectable for 115 or 230 Vac at an operating frequency of 50/60 Hz. It is designed to comply with existing emission standards and provides sufficient power for a fully loaded system configuration. The power supply voltage selection switch is factory set to 115Vac for systems used in the United States; it is set to 230Vac for systems used in Europe.
Peripheral Bays
The system supports a variety of standard PC AT-compatible peripheral devices. The chassis includes these peripheral bays:
n A 3.5-inch front panel bay for mounting the standard 3.5" diskette drive (supports
720 KB and 1.44 MB diskette media)
n Four 5.25-inch removable media front panel bays for mounting half-height 5.25-inch
peripheral devices: standard CD ROM drive and optional tape drives, etc.
n Seven hot-swap SCSI hard disk drive bays for mounting up to seven SCSI hard disk
drives in easily removable drive carriers.
Note: The SCSI hard disk drive bays contain a hot-swap back
plane that require an 80-pin single connector attachment (SCA) connector on the drives that you install.
SAF-TE Board
The system has a SAF-TE (SCSI Accessed Fault Tolerant Enclosure) board that provides an interface for the RAID subsystem to automatically integrate with peripheral packaging that supports status signals, hot swapping drives, and enclosure monitoring.
The transport mechanism for the standardized alert detection and status reporting is the SCSI bus. Disk drives, power supplies, cooling fans, and temperature are continually monitored and the conditions then reported over the SCSI bus to the system. When used with RAID management software the user can be alerted of impending or imminent conditions requiring attention. This allows the user to react to conditions that could normally go unnoticed until data loss.
System Overview 1-7
System Board Features
The system board offers a “flat” design with the processor and memory subsystems residing on the board. This figure shows the major components on the system board. The following subsections describe the system board major components.
GG
FF EE DD
CC
BB
AA
Z
Y
X
A
B CDE
F G
H
I
J
K
L
M N
O
VW
U
System Board
A. Processor connector R. Reserved B. DIMM slot 3 S. Diskette drive connector C. DIMM slot 2 T. Wide SCSI connector D. DIMM slot 1 U. Reserved
Fan3 (CPU) connector (used when optional
E.
power supply is installed) F. ATX power connector W. ISA slots for add in boards G. Reserved X. VGA monitor port H. Secondary IDE connector Y. USB connectors I. Primary IDE connector Z. RJ-45 network connector J. Fan1 connector (chassis front fan) AA. WOL enable jumper (not used) K. AT front panel connector BB. Serial port 2 connector L. Lithium backup battery CC. Parallel port connector M. Configuration jumper block DD. Fan4 connector (chassis upper rear fan) N. Configuration jumper block EE. Reserved O. System fan connector (not used) FF. Serial port 1 connector P. Reserved GG. Keyboard and Mouse connectors Q. Reserved
T
V. PCI slots for add in boards
PQRS
1-8 System Overview
Pentium II Processor
The system board includes a Pentium II processor that includes the processor core with an integrated 16 KB primary (L1) cache and a secondary (L2) cache. The processor implements the MMX™ technology and the processor’s numeric coprocessor significantly increases the speed of floating-point operations.
The processor external interface operates at a maximum of 100 MHz. The second-level cache is located on the substrate of the SEC cartridge. The cache includes burst pipelined synchronous static RAM (BSRAM). The L2 cache is offered with error correcting code (ECC) that operates at half the core clock rate.
System Memory
The system board contains three 168-pin DIMM sockets. Memory is partitioned as three banks of SDRAM DIMMs, each providing 72 bits of noninterleaved memory (64­bit main memory plus ECC). Your system may include from 32 MB to 768 MB of memory, using up to three DIMMs.
System memory begins at address 0 and is continuous (flat addressing) up to the maximum amount of DRAM installed (exception: system memory is noncontiguous in the ranges defined as memory holes using configuration registers). The system supports both base (conventional) and extended memory.
System Overview 1-9
I/O Expansion Slots
The server's expansion capabilities meet the needs of file and application servers for high performance I/O by providing a combination of PCI local bus and ISA connectors.
The system board has two full-length ISA bus connectors. One of the connectors shares a chassis expansion slot with a PCI connector. ISA features:
n Bus speed up to 8.33 MHz n 16-bit memory addressing n 8- or 16-bit data transfers n Plug and Play ready.
The system board has four full-length PCI connectors. One of the connectors shares a chassis expansion slot with an ISA connector. PCI features:
n Bus speed up to 33 MHz n 32-bit memory addressing n 5 V signaling environment n Burst transfers of up to 133 Mbps n 8-, 16-, or 32-bit data transfers n Plug and Play ready n Parity enabled.
1-10 System Overview
Real-Time Clock/Calendar
The real-time clock provides system clock/calendar information stored in a non-volatile memory (NVRAM). The real-time clock battery provides power backup for the real­time clock.
BIOS
A BIOS and Setup Utility are located in the Flash EPROM on the system board and include support for system setup and PCI/ISA Plug-and-Play auto-configuration. A number of security, reliability, and management features also have been incorporated to meet vital server needs.
IDE Controller
The system includes a dual channel enhanced IDE interface controller. The controller has a primary and secondary connector located on the system board, each connector supporting a master and a slave device. The IDE controller provides support for the internally mounted CD-ROM and an optional tape device.
Network Controller
The system board includes a 10BASE-T/100BASE-TX network controller based on the Intel 82558 Fast Ethernet PCI Bus Controller. As a PCI bus master, the controller can burst data at up to 132 MB/sec. The controller contains two receive and transmit FIFO buffers that prevent data overruns or underruns while waiting for access to the PCI bus. The controller has the following:
n 32-bit PCI bus master interface (direct drive of bus), compatible with PCI Bus
Specification, Revision 2.1
n Chained memory structure with improved dynamic transmit chaining for
enhanced performance
n Programmable transmit threshold for improved bus utilization n Early receive interrupt for concurrent processing of receive data n On-chip counters for network management n Autodetect and autoswitching for 10 or 100 Mbps network speeds n Support for both 10 Mbps and 100 Mbps networks, capable of full or half
duplex, with back-to-back transmit at 100 Mbps.
The network status LEDs on the system board indicate:
n Transmit/receive activity on the LAN n Valid link to the LAN n 10/100 Mbps transfer mode.
System Overview 1-11
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