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Digital Equipment Prioris XL 6000 Series Service Maintenance Manual

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Prioris XL 6000 Series Server
Service Maintenance Manual
Part Number: ER-B60WW-SM. A01
Digital Equipment Corporation

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  • Page 1 Prioris XL 6000 Series Server Service Maintenance Manual Part Number: ER-B60WW-SM. A01 Digital Equipment Corporation...
  • Page 2 March 1997 The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that might appear in this document.
  • Page 3 FCC ID: B6XWW The FCC wants you to know... This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 4 This equipment is in the 2nd Class category (information equipment to be used in a residential area or an adjacent area thereto) and conforms to the standards set by the Voluntary Control Council For Interference by Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in such residential area.

  • Page 5: Table Of Contents

    Contents Introduction Reliability/Availability ....................... Server Expansion ......................Server Management and Security.................. Server Software and Documentation ................Diagnostic Software......................Server Utilities and Technical Support................Important Ergonomic Information................... Server Software and Utilities Introduction........................ServerWORKS Quick Launch..................System Configuration Utility (SCU)................. Starting the SCU......................Using the SCU......................
  • Page 6 Contents Main Logic Board Components and Connectors............3-10 Tools Needed ......................... 3-12 Static Electricity ......................3-12 Server Management Introduction........................Obtaining Information Using Server Management Software .......... Displaying Server Status Using the Hardware..............Server Status......................POST Beep Codes......................POST Codes and Countdown Codes................Normal Port-80 Codes and Countdown Codes ............
  • Page 7 Contents Installing Optional Drives ....................Installing a 5¼-Inch Device into the Front Access Drive Bay........Expansion Brackets ....................Installing a 3½-Inch Device into the Internal Drive Bay..........Connecting an External SCSI Storage Box ..............6-10 Installing Expansion Boards Introduction........................ISA Expansion Board Configuration Guidelines ............. PCI Expansion Board Configuration Guidelines .............
  • Page 8 Contents Troubleshooting Introduction........................10-1 Initial Troubleshooting..................... 10-2 Running the Diagnostics....................10-3 Diagnostics Utility Keys....................10-4 Server Troubleshooting ....................10-5 Disk Drive Troubleshooting..................... 10-8 Tape Drive Troubleshooting ................... 10-11 Monitor Troubleshooting....................10-12 CD-ROM Troubleshooting....................10-13 Diskette Drive Troubleshooting..................10-14 Field Service Replacement Introduction........................
  • Page 9 Contents Field Service Notes Introduction........................13-1 Power Up and Boot Sequence Power On Self Test ......................14-1 Server Boot Sequence ....................14-2 Bootable CD-ROM...................... 14-2 Drive A or Drive C....................... 14-2 Drive C Assignment ....................14-2 Product Reference and Support Introduction........................
  • Page 10 Contents Device Mapping Introduction........................CPU Memory Address Map..................I/O Address Map......................Server Interrupt Levels ....................PCI Configuration Space Address Map ..............SCU Features Introduction........................Systems Group......................Memory Subsystem Group..................Onboard Disk Controllers.................... Onboard Communication Devices................Floppy Drive Subsystems Group................BIOS Language Support Group ................. Keyboard (KB) and Mouse Subsystem Group ............
  • Page 11 Digital reserves the right to make changes to this Service Maintenance Manual without notice. Accordingly, the illustrations and procedures in this document might not apply to all Prioris XL 6000 Series servers to be serviced since many of the diagnostic tests are designed to test more than one product.
  • Page 12 Preface Organization This guide contains the following:  • Chapter 1: Introduction This chapter provides information about your server such as: features, server software and documentation, diagnostic software, server utilities and technical support, and ergonomic information. •  Chapter 2: Server Software and Utilities This chapter describes the server software and utilities that are supplied with your server.
  • Page 13 Preface •  Chapter 10 Troubleshooting This chapter describes initial and advanced troubleshooting solutions. •  Chapter 11: Field Service Replacement This chapter describes field service replacement procedures. For example, the main logic board, power supplies, fans, etc. •  Chapter 12: Field Service Illustrated Parts Breakdown This chapter lists orderable part numbers for Field Replaceable Units (FRUs).
  • Page 14 Preface Conventions Convention Description Example Installation Guide Italics are typically used for titles, comments, and references to other sections of this document or other documents. c:\windows> Monospaced text indicates information that your server or software displays. For example, a directory path or error message.
  • Page 15 Preface Abbreviations Abbreviation Meaning BIOS Basic input/output system Central processing unit DIMM Dual in-line memory module Direct memory access DRAM Dynamic random access memory Error correction code Extended capabilities port Enhanced parallel port Field replaceable unit An h suffix to a numerical value denotes hexadecimal numbers.

  • Page 16: Special Notices

    Preface Special Notices Three special notices are used to emphasize specific information. WARNING: Indicates the presence of a hazard that can cause personal injury if the hazard is not avoided. CAUTION: Indicates the presence of a hazard that might cause damage to hardware or that might corrupt software. NOTES: Used to provide additional information.
  • Page 17 Preface Typical Prioris XL 6000 Series Server NOTE: Your monitor, keyboard, and mouse might look different. xiii...

  • Page 18: Introduction

    The Prioris XL 6000 Series server is a high-performance, highly-scaleable network and application server featuring the latest in modular CPU and storage technology. The Prioris XL 6000 Series server provides the following features: Reliability/Availability Single (1P) Pentium Pro processor mode. The CPU operates using a 64-bit memory interface and an internal L2 cache.

  • Page 19: Server Expansion

    Introduction Server Expansion Flexible Memory ECC memory support. Server memory can be Architecture upgraded from 16 MB to 512 MB on the main logic board. Two ISA Expansion Accommodates industry-standard expansion boards Slots and Three PCI such as network, Small Computer System Interface Expansion Slots (SCSI), and modems.

  • Page 20: Server Management And Security

    Introduction Server Management and Security Server Diagnostics Allows local and remote diagnosis of server problems. Hardware Configuration Allows local and remote server configuration. RAM-Based Error Log Records startup error messages. Firmware Upgrade Upgrades firmware versions. Utility Key Lock Limits access to server components. Server Software and Documentation The following software and documentation are supplied with your server: •...

  • Page 21: Diagnostic Software

    Introduction • Server documentation box  contains this System Reference, an Installation Guide, a Documentation Overview, Warranty information, Options manuals, and Registration Card. NOTE: You might have ordered additional options such as hard disk drives, tape back-up systems, CD-ROMs, or modems that have been installed in your server.

  • Page 22: Server Utilities And Technical Support

    Introduction 2. Using the Installations & Utilities button and then selecting the Utilities page from the ServerWORKS Quick Launch CD-ROM, you can create a bootable diagnostic software diskette. This allows you to run the diagnostic software anytime using the diskette you created. For additional information, read any README files that are on the diagnostic diskette you created.

  • Page 23: Important Ergonomic Information

    Introduction Important Ergonomic Information After the server is installed, it is important to apply the following ergonomic information. • Be comfortable in your work space. • Change your posture frequently. • Proceed according to the recommendations in the following table and figure.
  • Page 24 Introduction Work breaks Take periodic work breaks. Morning, lunch, and afternoon breaks during the 7-hour workday meet most recommendations. Take advantage of work breaks to move around and do other activities. Lighting Avoid direct lighting or sunlight on the screen, which causes glare and reflections.
  • Page 25 Introduction IMPORTANT: If you experience pain or discomfort during use of the server, take a rest break and review the instructions for proper ergonomic setup and use. If the pain or discomfort continues after resuming use of the server, discontinue use and report the condition to your job supervisor or physician.

  • Page 26: Server Software And Utilities

    Server Software and Utilities Introduction This chapter describes the utilities supplied with your server. Server utilities include: • ServerWORKS Quick Launch  This software is used to install a network operating system onto the server . The CD-ROM also contains various drivers and on-line documentation.

  • Page 27: Serverworks Quick Launch

    Server Software and Utilities ServerWORKS Quick Launch Quick Launch is used to install the server’s Network Operating System (NOS). In addition to providing quick and seamless NOS installation, Quick Launch also provides drivers, documentation, and the ability to make diskettes of utilities such as diagnostics.

  • Page 28: Starting The Scu

    Server Software and Utilities The SCU always updates the checksums for both areas so that the BIOS can detect any potential data corruption before the actual hardware configuration takes place. If the data is corrupted, the BIOS requests that you configure the server before it can boot.

  • Page 29: Using The Scu

    Server Software and Utilities 3. You can also run the SCU by inserting the Quick Launch CD-ROM disk, rebooting the server, and pressing and holding the right [ALT] key during the boot process to display the SCU. NOTE: If PCI cards have been added to your server, the SCU will be invoked automatically when you boot from the Quick Launch CD-ROM disk.

  • Page 30: Flash Memory Update Program

    Server Software and Utilities Flash Memory Update Program All servers have BIOS software in a ROM. This BIOS initializes hardware and boots the operating system when the server is turned on. The BIOS also provides access to other services such as keyboard and disk drives. You can upgrade your server's BIOS to future releases by executing the flash utility located in the BIOS update kit.

  • Page 31: Diagnostics

    Server Software and Utilities Diagnostics The diagnostics for the server are located on the Quick Launch CD-ROM. In addition, the manual is also located on the CD-ROM in an on-line format. The Quick Launch CD-ROM can be used to make a floppy diskette of the diagnostics.

  • Page 32: Server Components

    Server Components Introduction This chapter shows the location of the Prioris XL 6000 Series server internal components and procedures for unlocking and removing the side panel. Disconnecting External Devices and Power Before removing the side panel, perform the following: 1. Shut down any applications that are currently running, then shut down the operating system.

  • Page 33: Removing And Installing The Side Panel

    Server Components Removing and Installing the Side Panel To remove the side panel, perform the following: 1. Unlock the side panel. 2. Slide the panel to the rear of the server. Figure 3-1. Unlocking and Removing the Side Panel...
  • Page 34 Server Components To install the side panel. 1. Slide the panel to the front of the server. 2. Lock the side panel. Figure 3-2. Installing the Side Panel...

  • Page 35: Server Front View

    Server Components Server Front View Figure Component Legend Security door lock/chassis lock Hard disk drive indicator Power indicator Reset button Power on/off button CD-ROM drive (option on Prioris XLe 6000 Series servers) 3½-inch diskette drive Diskette eject button Nameplate showing server model name...
  • Page 36 Server Components Figure 3-3. Server Front View...

  • Page 37: Server Left Side View

    Server Components Server Left Side View Figure Legend Component Power supply Location of main logic board Rear panel expansion board slots Two ISA expansion slots and three PCI expansion slots Internal 3½-inch drive bays Upper fan assembly Lower fan assembly...
  • Page 38 Server Components Figure 3-4. Server Left Side View...

  • Page 39: Server Rear View

    Server Components Server Rear View Figure Legend Component 10Base-T/100Base-T port connector (RJ45) Serial port B, COM 2 Video port Parallel port Serial port A, COM 1 Keyboard port Mouse port Voltage select switch ac line connector SCSI knockout External SCSI port Expansion board slot covers Padlock ring...
  • Page 40 Server Components Figure 3-5. Server Rear View...

  • Page 41: Main Logic Board Components And Connectors

    Server Components Main Logic Board Components and Connectors Figure Legend Component/Connector Processor ZIF socket Serial port B (COM2) Front panel connector ATX power connector Auxiliary power connector Power connector Wide SCSI connector Fan 0 connector ATX interface connector Diskette drive connector Fan 1 connector Configuration jumper blocks (CMOS &...
  • Page 42 Server Components Figure 3-6. Main Logic Board Components and Connectors 3-11...

  • Page 43: Tools Needed

    Server Components Tools Needed Prior to installing an option, have the following available: • A Phillips screwdriver • An antistatic wrist strap Static Electricity Static electricity collects on non-conductors such as paper, cloth, or plastic. A static discharge can be damaging even though you often cannot see or feel it. To prevent damage to circuit boards and/or components: •...

  • Page 44: Server Management

    Server Management Introduction This chapter describes how to manage your server using a network manager, specifically Digital’s ServerWORKS Manager . This chapter also provides a list and description of error messages that might display and beep codes that might sound if a failure occurs. NOTE: Digital’s ServerWORKS Manager is an option with Prioris XLe 6000 Series servers.

  • Page 45: Obtaining Information Using Server Management Software

    Server Management Obtaining Information Using Server Management Software Your Prioris XL 6000 Series server is shipped with ServerWORKS™ Manager software. ServerWORKS Manager is a workgroup and server management product for Digital’s family of servers. ServerWORKS Manager utilizes the Simple Network Management Protocol (SNMP) environment to assist the Network or Server administrator by constantly monitoring the network for problems.

  • Page 46: Displaying Server Status Using The Hardware

    ServerWORKS Manager to view and be notified of events on the server. You can also manage the Prioris XL 6000 Series server with other SNMP-based managers. Refer to the chapter on Managing Servers using other SNMP based Managers in the ServerWORKS Manager Administrator User’s Guide for more information.

  • Page 47: Server Status

    Server Management Server Status Component Possible Failures Result Main logic board The voltages are outside of the power An error message displays and a voltages: +12, +5, good range. warning beep sounds. +3.3, and -12V The voltage exceeds the upper limit. The server will shutdown after 5 minutes.

  • Page 48: Post Beep Codes

    Server Management POST Beep Codes POST cannot display messages when an error occurs before the monitor is initialized. Instead, it emits a beep code. The beep code is a series of individual beeps, each equal in length. Write down any beep code for your authorized service provider.

  • Page 49: Post Codes And Countdown Codes

    Server Management POST Codes and Countdown Codes The BIOS indicates the current testing phase during POST after the video controller has been successfully initialized by outputting a 2-digit hex code to I/O location 80h. There are two different sets of codes: •...
  • Page 50 Server Management Port 80 Countdown Description Codes Codes Test RAM from 0 - 640 KB Test and initialize first 1 MB of memory RAM failure, remap memory partitions and test again RAM test complete, passed; clear parity errors Set up stack at 30:100, enable cache, and shadow BIOS Initialize code dispatcher Make F000h DRAM R/W enabled Dispatch POST...
  • Page 51 Server Management Port 80 Countdown Description Codes Codes Check vertical retrace Sign on message Initialize messaging services and clear screen Custom sign on display Keyboard/mouse port check KBC initialization and testing Check if keyboard is locked Initialize mouse Keyboard, mouse, and other sign-ons Prepare for memory test Decide memory size from chipset Disable cache, test memory, and display memory size on screen...
  • Page 52 Server Management Port 80 Countdown Description Codes Codes Clear soft reset flag, complete MP Table Timer data area initialization Printer setup RS-232 setup Check for stuck key Before NPX (numeric processor instructions) test and initialization NPX test and initialization Update co-processor information in CMOS and recalculate checksum Set typematic rate Keyboard READ ID command Wait for READ ID response...

  • Page 53: Recovery Port-80 Codes And Countdown Codes

    Server Management Recovery Port-80 Codes and Countdown Codes These codes are displayed during a recovery boot process. During this process, a diskette in drive A is booted and a BIOS image is automatically installed. Port 80 Countdown Description Codes Codes Disable internal cache Disable DMA controller #1 and #2, disable interrupt controller #1 and #2, and reset video display...

  • Page 54: Installing Additional Memory

    Installing Additonal Server Memory By adding more server memory, you can run larger and more complicated software on your server. Your Prioris XL 6000 Series server supports up to 512 MB of ECC protected memory (using single-banked DIMMs). This section provides the server memory configuration guidelines that must be followed prior to installing additional DIMMs on the main logic board.

  • Page 55: Memory Configuration Guidelines

    Installing Additional Memory Memory Configuration Guidelines The memory configuration guidelines for the Prioris XL 6000 Series server are as follows: • Install memory starting at Bank 0. • Minimum memory supported is 32 MB (16 MB in Prioris XLe 6000 Series servers).

  • Page 56: Upgrading Memory

    Figure 5-1. DIMM Bank Locations Upgrading Memory You can upgrade memory on your Prioris XL 6000 Series server by adding DIMMs on the main logic board. When expanding server memory, always start with the DIMM Bank closest to Bank 0.

  • Page 57: Installing Dimms

    Installing Additional Memory Installing DIMMs NOTE: Prior to installing additional memory in your Prioris XL 6000 Series server, refer to the previous section to verify the memory configuration you have planned conforms to all memory configuration guidelines. To install DIMMs, perform the following: 1.
  • Page 58 Installing Additional Memory Figure 5-2. Installing a DIMM...

  • Page 59: Memory Troubleshooting

    Installing Additional Memory Memory Troubleshooting The Prioris XL 6000 Series server POST can detect memory errors when it boots. The error can be isolated to one of the DIMMs installed on the main logic board. The memory error message format is as follows: <Type of <Error>: <Location>...

  • Page 60: Installing Additional Video Memory

    Installing Additional Memory Installing Additional Video Memory Your server comes standard with 512 KB of video memory. You can increase this amount to 1 MB by installing a 512 KB video memory DRAM chip in the designated socket on the main logic board. To install the video memory upgrade chip, perform the following: 1.
  • Page 61 Installing Additional Memory Figure 5-3. Installing a Video Memory Expansion Chip...

  • Page 62: Installing Disk And Tape Drives

    Installing Disk and Tape Drives Introduction This chapter describes the configuration guidelines that must be followed prior to installing optional disks, a tape drive, and an external storage box. Detailed installation procedures are also included. Disk and Tape Drive Configuration Guidelines •...

  • Page 63: Scsi Configuration Guidelines

    Installing Disk and Tape Drives SCSI Configuration Guidelines The following sections describe the SCSI configuration guidelines that must be adhered to so your server operates correctly after installing and connecting SCSI devices. SCSI ID and Termination • Your server supports up to 4 or 6 internal SCSI devices, including six hard disk drives, or four hard disk drives, one CD-ROM drive, and one half-height device (such as a tape drive).

  • Page 64: Boot Device

    Installing Disk and Tape Drives Boot Device • Each operating system has different limitations regarding the number of SCSI controllers that are supported. Refer to your operating system documentation for additional information. External Channel • Determine that the SCSI IDs you select for the external SCSI devices do not conflict with other devices installed in the server on the same bus.

  • Page 65: Cables

    Installing Disk and Tape Drives Cables The server is shipped with a wide SCSI cable with ten connectors connected to the wide Adaptec 7880 SCSI controller on the main logic board to the CD-ROM (option on some Prioris XLe 6000 Series configurations) and then to the two 5.25-inch drive bays and an active termination.

  • Page 66: Installing A 5¼-Inch Device Into The Front Access Drive Bay

    Installing Disk and Tape Drives Installing a 5¼-Inch Device into the Front Access Drive Bay To install a 5¼-inch device into the front access drive bay slot, perform the following: 1. Turn off your server. 2. Disconnect all external devices, ac power, and monitor power. 3.
  • Page 67 Installing Disk and Tape Drives Figure 6-1. Installing a 5¼-Inch Device into the Front Access Drive Bay...

  • Page 68: Expansion Brackets

    Installing Disk and Tape Drives Expansion Brackets You can install a 3½-inch half-height device in the front access drive bay. If you plan to install a 3½-inch device in a 5¼-inch drive bay slot, you must first install the 3½-inch expansion brackets onto the device and then install the 5¼-inch brackets as shown in Figure 6-2.

  • Page 69: Installing A 3½-Inch Device Into The Internal Drive Bay

    Installing Disk and Tape Drives Installing a 3½-Inch Device into the Internal Drive Bay To install a 3½-inch device into one of the internal drive bay slots, perform the following: 1. Turn off your server. 2. Disconnect all external devices, ac power, and monitor power. 3.
  • Page 70 Installing Disk and Tape Drives 5. Pivot the internal drive bay out to about a 45-deg. angle from the chassis. 6. Pivot out the retaining arm and insert it in the bracket to stabilize the drive bay. 7. Insert the device into the drive bay slot. 8.

  • Page 71: Connecting An External Scsi Storage Box

    To connect an external SCSI storage box: 1. Power down the Prioris XL 6000 Series server. 2. Remove the terminator from the external wide SCSI connector at the rear of the server.
  • Page 72 Installing Disk and Tape Drives Figure 6-5. Connecting an External SCSI Storage Box 6-11...

  • Page 73: Installing Expansion Boards Introduction

    Installing Expansion Boards Introduction This chapter contains the configuration guidelines that must be followed prior to installing ISA or PCI expansion boards as well as detailed installation procedures. Note that PCI expansion boards can be SCSI. ISA Expansion Board Configuration Guidelines •...
  • Page 74 Installing Expansion Boards Figure 7-1. Expansion Board Slot Locations...

  • Page 75: Pci Expansion Board Configuration Guidelines

    Installing Expansion Boards PCI Expansion Board Configuration Guidelines • PCI slots one through three support bus mastering 32-bit PCI expansion boards. • PCI boards should be installed starting in PCI slot one. NOTE: Your server’s BIOS will automatically disable the onboard video controller when a video expansion board is installed.

  • Page 76: Server Boot Sequence

    Installing Expansion Boards Server Boot Sequence The server boot sequence is as follows: 1. If a bootable CD-ROM drive is enabled and a bootable CD-ROM is put in this drive, the server ignores all other settings and boots from the CD-ROM. If a CD-ROM is not present, the operating system can boot from either drive A or C depending on how an option in the SCU has been set.

  • Page 77: Server Scan Sequence

    Installing Expansion Boards Server Scan Sequence If the boot device is neither the CD-ROM drive or the diskette drive, then the operating system will be found on drive C. The location of drive C can be determined as follows: 1. The search for a bootable device is started from a low ROM address to a high ROM address (starting at C8000h).

  • Page 78: Boot Device Assignment Example

    Installing Expansion Boards Boot Device Assignment Example In this example, the assumption is that “PCI slots” is the selected boot sequence preference in the SCU. PCI Scan Order Example PCI slot 1 PCI 2 channel SCSI controller with an onboard PCI to PCI bridge chip to an internal PCI bus where one SCSI controller is attached.
  • Page 79 Installing Expansion Boards PCI Bus 0 (Slots 1- Two Channel PCI Slot 3 SCSI Controller 2940W PCI Bus 1 ID 1 ID 3 ID 1 Ch 2 Ch 1 ID 3 DEC01035 Figure 7-2. PCI Scan Order...

  • Page 80: Identifying Pci Devices In The Scu

    Installing Expansion Boards Identifying PCI Devices in the SCU The SCU automatically scans for PCI devices and assigns resources to them. PCI devices appear in the SCU as either assigned to a slot, or as embedded devices. If a PCI expansion board uses one or more interrupts, but none of the interrupts are shared, then the SCU will contain an entry for each interrupt used by that PCI expansion board.
  • Page 81 Installing Expansion Boards When the number of PCI devices exceeds 10, any additional devices will appear as embedded devices, even if they require an IRQ assigned to them. The embedded devices are listed in the order in which they were detected. associate embedded devices with particular PCI expansion boards, you must know the number of devices (excluding PCI-to-PCI bridges, which are not listed in the SCU) on each PCI expansion board.

  • Page 82: Installing Expansion Boards

    Installing Expansion Boards Installing Expansion Boards The following sections describe how to install ISA and PCI expansion boards. Detailed procedures on running the SCU before installing ISA expansion boards and after installing PCI expansion boards are also included. Adding ISA Expansion Boards Perform the following steps before installing ISA expansion boards: 1.

  • Page 83: Installing Isa Expansion Boards

    Installing Expansion Boards Installing ISA Expansion Boards To install an ISA expansion board: NOTE: Read and fully understand your optional expansion board's documentation before installing the expansion board. 1. Run the SCU. 2. Turn off your server. 3. Disconnect the external devices, ac power, and monitor power. 4.
  • Page 84 Installing Expansion Boards 6. Insert the new ISA expansion board into the socket and push it firmly into place. Figure 7-4. Installing an ISA Expansion Board 7. Secure the ISA expansion board to the slot with the screw removed in step 5.

  • Page 85: Installing Pci Expansion Boards

    Installing Expansion Boards Installing PCI Expansion Boards To install a PCI expansion board: NOTE: Read and fully understand your optional expansion board’s documentation before installing the expansion board. 1. Turn off your server. 2. Disconnect all external devices, ac power, and monitor power. 3.
  • Page 86 Installing Expansion Boards 6. Secure the PCI expansion board to slot with the screw removed in step 7. Replace and lock the side panel. 8. Connect all external devices and restore power. 9. Run the SCU. Refer to “Adding PCI Expansion Boards” for detailed information on running the SCU.

  • Page 87: Adding Pci Expansion Boards

    Installing Expansion Boards Adding PCI Expansion Boards CAUTION: Before installing a PCI video expansion board, make sure the appropriate PCI slot options group is enabled. Failure to do so might cause your server to operate incorrectly. Perform the following steps after installing PCI expansion boards: 1.

  • Page 88: Relocating Expansion Boards

    Installing Expansion Boards Relocating Expansion Boards Perform the following steps before relocating an ISA expansion board and after relocating a PCI expansion board. 1. Start the SCU using one of the three methods described in Chapter 2, “Starting the SCU.” 2.

  • Page 89: Connecting Scsi Adapters

    Run the SCSI configuration utility to change controller settings to fit your specific configuration. Refer to Chapter 6 for additional SCSI configuration guidelines. SCSI Controller Cable Configuration The following section describes the SCSI controller cable configuration for your Prioris XL 6000 Series server.

  • Page 90: Single Channel Scsi Configuration

    Connecting SCSI Adapters Single Channel SCSI Configuration To connect SCSI devices, perform the following: Power down the server. Disconnect all peripheral devices from the server. Unlock and remove the side panel. Connect the cables as shown in Figure 8-1. Replace and lock the side panel. Connect all external devices and then power on your server.
  • Page 91 Connecting SCSI Adapters Figure 8-1. Single Channel SCSI Configuration...

  • Page 92: Server Security Features

    Server Security Features Introduction Server security is important to prevent theft or accidental loss of software and hardware. The Prioris XL 6000 Series server provides the following levels of protection: • Security door and side panel chassis lock—located at the front of your server.

  • Page 93: Security Door And Side Panel Chassis Lock

    Server Security Features Security Door and Side Panel Chassis Lock Your server has a three-way keylock used to prevent unauthorized access to the front panel security door and left side panel. To open the security door, insert the key into the keylock at lock position number 2 and then turn the key clockwise to lock position number 1.

  • Page 94: Padlock Ring

    Server Security Features Padlock Ring Your server has a padlock ring located at the bottom of the rear panel. This ring allows you to secure the server with your own padlock to prevent theft. Administrative and User Password Your server has two password levels that you can set to prevent unauthorized access to your server files or BIOS Setup utility.

  • Page 95: If You Forget Your Password

    Server Security Features If You Forget Your Password Use the following procedure to erase a password from your server. 1. Turn off your server and remove the side panel. 2. Change jumper J36B to password clear (place a jumper over pins 2 and Refer to Figure 9-2 for the jumper locations.
  • Page 96 Server Security Features 3. Reconnect your server and turn it on. Booting your server with the a jumper installed over J36B pins 2 and 3 erases the existing password(s). 4. Turn off your server. 5. Change jumper J36B to protect (place a jumper over pins 1 and 2). 6.

  • Page 97: Additional Security Features

    Server Security Features Additional Security Features Additional server security features are available as options in the CMOS and through main logic board jumper settings. The CMOS includes the following setup options to improve server security: • Floppy Writes — Setting this option to Disabled prevents unauthorized personnel from writing data to a diskette.

  • Page 98: Troubleshooting

    Troubleshooting Introduction This chapter provides initial troubleshooting procedures. The tables that follow list specific problems, probable causes, and recommended actions to take if your server fails. Tables include: • Server Troubleshooting • Disk Drive Troubleshooting • Tape Drive Troubleshooting • Monitor Troubleshooting •...

  • Page 99: Initial Troubleshooting

    Troubleshooting Initial Troubleshooting Follow these general procedures to troubleshoot your Prioris XL 6000 Series server. • Record all configuration information and have it readily available. • Turn off your server, wait until all hard disk drives completely spin down, and then turn it back on.

  • Page 100: Running The Diagnostics

    Troubleshooting Running the Diagnostics The Prioris XL 6000 server comes with an advanced set of diagnostic utilities that are used to identify and correct problems that are encountered when configuring or troubleshooting the server. The diagnostics are available from: • The Utilities folder on the ServerWORKS Quick Launch CD-ROM.

  • Page 101: Diagnostics Utility Keys

    Troubleshooting Diagnostics Utility Keys Description <Esc> Either exits the diagnostics (if a test are not running) or halts the current test (if a test is running) <Alt> <H> Displays/hides the destructive tests on the hard disk drive, diskette drive, and SCSI test menus <Enter>...

  • Page 102: Server Troubleshooting

    Troubleshooting Server Troubleshooting Problem Possible Cause Action No response when the Server is not plugged in. Turn off the server, plug it in, and server is turned on. then turn it back on again. No power at the wall outlet. Use another wall outlet.
  • Page 103 Troubleshooting Problem Possible Cause Action Server operates incorrectly Expansion board installed Remove expansion board and after installing optional incorrectly. reinstall. expansion board. Did not run SCU to Run the SCU to properly configure configure expansion board expansion board. Refer to Chapter after installation.
  • Page 104 Troubleshooting Problem Possible Cause Action No response to keyboard Keyboard might be Enter the keyboard password. commands. password protected by a local or remote control program. Keyboard is not connected. Power down the server and connect the keyboard. Keyboard failed. Replace keyboard or contact your authorized service provider.

  • Page 105: Disk Drive Troubleshooting

    Troubleshooting Disk Drive Troubleshooting Problem Possible Cause Action Server does not SCSI device jumpers Refer to the supplied kit installation recognize an internal incorrectly set. instructions. SCSI device. SCSI ID conflicts. Refer to the supplied kit installation instructions. Terminating resistors not Remove terminating resistors.
  • Page 106 Troubleshooting Problem Possible Cause Action Server does not SCSI device jumpers Refer to the supplied kit installation recognize an external incorrectly set. instructions. SCSI device. SCSI ID conflicts. Refer to the supplied kit installation instructions. Terminating resistors not Remove terminating resistors. Refer to removed from the SCSI the supplied kit installation instructions.
  • Page 107 Troubleshooting Problem Possible Cause Action Server does not boot SCSI boot hard disk drive not Format the SCSI hard disk drive. from an internal SCSI formatted. CAUTION: Formatting the SCSI hard disk drive. hard disk drive will destroy all the data on the drive.

  • Page 108: Tape Drive Troubleshooting

    Troubleshooting Tape Drive Troubleshooting Problem Possible Cause Action Tape will not load. Tape inserted incorrectly. Insert the tape with the arrow on the cassette pointing towards the drive. Cannot write data to a Tape write-protected. Slide the write-protect tab on the tape.

  • Page 109: Monitor Troubleshooting

    Troubleshooting Monitor Troubleshooting Problem Possible Cause Action Monitor power indicator is Monitor is turned off. Turn on the monitor. not on. Power cord is not Connect the power cord to the connected. server. No power at wall outlet. Use another outlet. Power indicator is Contact your authorized service defective.

  • Page 110: Cd-Rom Troubleshooting

    Troubleshooting CD-ROM Troubleshooting Problem Possible Cause Action Cannot access the CD- Device drivers not installed. Install correct device drivers. ROM drive. Error message No disk in the CD-ROM Insert a disk. reading drive x. drive. Incorrect SCSI ID assigned. Make sure correct SCSI ID is assigned.

  • Page 111: Diskette Drive Troubleshooting

    Troubleshooting Diskette Drive Troubleshooting Problem Possible Cause Action Target diskette drive cannot Diskette is not formatted. Format the diskette. read or write information. Diskette is worn or Try another diskette. damaged. Diskette is write-protected. Slide the write-protect switch so the hole is not visible.

  • Page 112: Field Service Replacement

    Field Service Replacement Introduction The following sections provide detailed service instructions for Prioris XL 6000 Series servers. CAUTION: Static electricity collects on non-conductors such as paper, cloth, or plastic. A static discharge can be damaging even though you often cannot see or feel it. To prevent damage to circuit boards and/or components: •...

  • Page 113: Other Materials Needed

    Field Service Replacement Other Materials Needed The cleaning agent should be an all purpose cleaner. Special Tools Required None. Remedial Diagnostic Test Software Supplier information: AMI Diagnostics 6145-F Northbelt Parkway Norcross, GA 30071, USA Voice: 1-770-246-8600 FAX: 1-770-246-8791 Support: 1-770-246-8645 Internet: http://www.megatrends.com Virus Software Information F-PROT, Virus Detection and Cleanup Software, latest version.

  • Page 114: Restoring The Serial Number

    SCU. After a change, the part number is displayed as invalid. Removing and Replacing Components The following sections provide removal and replacement procedures for the following Prioris XL 6000 Series server components: • Power supply •...

  • Page 115: Removing And Replacing The Power Supply And Control Assembly

    Field Service Replacement Removing and Replacing the Power Supply and Control Assembly 1. Open the security door. 2. Turn off the server. 3. Disconnect the ac power cord. 4. Unlock and remove the side panel. 5. Remove the front bezel. 6.
  • Page 116 Field Service Replacement DEC02029 Figure 11-1. Removing and Replacing the Power Supply and Control Assembly 11-5...

  • Page 117: Removing And Replacing The Diskette Drive

    Field Service Replacement Removing and Replacing the Diskette Drive 1. Open the security door. 2. Turn off the server. 3. Disconnect the ac power cord. 4. Unlock and remove the side panel. 5. Disconnect the power and data cables from the drive. 6.
  • Page 118 Field Service Replacement DEC01090-2 Figure 11-2. Removing and Replacing the Diskette Drive 11-7...

  • Page 119: Removing And Replacing The Cd-Rom Drive

    Field Service Replacement Removing and Replacing the CD-ROM Drive 1. Open the security door. 2. Turn off the server. 3. Disconnect the ac power cord. 4. Unlock and remove the side panel. 5. Disconnect the power, data, and (if installed) audio cables from the CD-ROM drive.
  • Page 120 Field Service Replacement DEC01090-3 Figure 11-3. Removing and Replacing the CD-ROM Drive 11-9...

  • Page 121: Removing And Replacing The Drive Bay Cooling Fan

    Field Service Replacement Removing and Replacing the Drive Bay Cooling Fan The following procedure can be used to remove the drive bay cooling fan. 1. Turn off the server. 2. Disconnect the ac power cord. 3. Unlock and remove the side panel. 4.
  • Page 122 Field Service Replacement DEC02020 Figure 11-4. Removing and Replacing the Drive Bay Cooling Fan 11-11...

  • Page 123: Removing And Replacing The Lower Cooling Fan

    Field Service Replacement Removing and Replacing the Lower Cooling 1. Turn off the server. 2. Disconnect the ac power cord. 3. Unlock and remove the side panel. 4. Disconnect the fan cable from the main logic board. 5. From inside the housing, and using a small screw driver, push out on the black Nylock fastener.
  • Page 124 Field Service Replacement DEC02023 Figure 11-5. Removing and Replacing the Lower Cooling Fan 11-13...

  • Page 125: Removing And Replacing The Speaker

    Field Service Replacement Removing and Replacing the Speaker 1. Turn off the server. 2. Disconnect the ac power cord. 3. Unlock and remove the side panel. 4. Disconnect the speaker cable from the main logic board. 5. Slide the speaker out and over the retaining dimple. 6.

  • Page 126: Replacing The Lithium Battery

    Field Service Replacement Replacing the Lithium Battery Your server comes with a Lithium 3 V dc wafer-style battery. If your server ever fails to retain the correct date, time, or configuration settings when it is turned on, you need to replace the battery. To replace the Lithium battery, perform the following: 1.
  • Page 127 Field Service Replacement 6. Install the new battery. When installing the new battery, make sure the “+” side faces up. 7. Replace and lock the side panel. 8. Connect external devices and restore power. 9. Reboot and run the SCU: a.
  • Page 128 Field Service Replacement Figure 11-7. Replacing the Battery 11-17...

  • Page 129: Removing And Replacing The Main Logic Board

    Field Service Replacement Removing and Replacing the Main Logic Board 1. Turn off the server. 2. Remove ac power. 3. Disconnect all external cables from the I/O expansion modules located at the rear of server. 4. Unlock and remove the side panel. 5.
  • Page 130 Field Service Replacement DEC01088-10 Figure 11-8. Removing and Replacing the Main Logic Board 11-19...

  • Page 131: Field Service Ipb

    Field Service IPB Introduction Following is an illustrated parts breakdown for the Prioris XL 6000 Series server. Parts tables and support illustrations include: server front view and server left-side view. 12-1...

  • Page 132: Server Front View

    Field Service IPB Server Front View Figure Orderable Description Legend Spare Part 70-32706-01 3.5-inch drive bay, internal 12-45246-06 Fan assembly, lower 12-44211-02 Fan assembly, upper 74-51969-01 Fan holder (housing, drive bay) 74-51970-01 Fan pipe (for CPU cooling) 70-32567-01 Side panel assembly, frost white 00-PCXRJ-AD 3.5-inch, floppy disk drive, 1.44 MB, frost white 70-32569-01...
  • Page 133 Field Service IPB DEC01104 Figure 12-1. Server Front View 12-3...

  • Page 134: Server Left-Side View

    Field Service IPB Server Left-Side View Figure Orderable Description Legend Spare Part 12-39309-04 Speaker assembly 30-48174-01 Main logic board 12-41474-05 Real-time clock (server battery) 21-43868-05 P6 200 256 cache CPU chip 21-43868-06 P6 180 256 cache CPU chip 54-24354-DA DIMM, 8MB 54-24340-CA DIMM, 16 MB 54-24329-DA...
  • Page 135 Field Service IPB 9101112131415 DEC01105 12-5 1234...

  • Page 136: Miscellaneous

    Field Service IPB Miscellaneous Orderable Spare Description Part 17-04495-01 Power cable, HDD 17-04495-02 Power cable, CD-ROM 30-41854-01 14.4 bps data/fax modem 30-42291-01 28.8 data/14.4 fax modem 30-46729-02 Adaptec, host adapter, PCI SCSI ultra wide 2-channel 30-48115-01 Controller, 1-channel, RAID (FR-PCTAR-EA) 12-47320-01 Heat sink, CPU 12-47323-01...
  • Page 137 Field Service Notes 13-1...

  • Page 138: Power On Self Test

    Power Up and Boot Sequence Power On Self Test Before booting the system, the BIOS performs a power on self test to ensure that the server is in good condition. The self test begins with a BIOS ROM checksum and memory check.

  • Page 139: Bootable Cd-Rom

    Power Up and Boot Sequence • Hard drive • Hardware interrupts • Set time of day When completed with no fatal error, the self test generates one short beep to indicate that the system is ready to boot. Server Boot Sequence Bootable CD-ROM When the CD-ROM is enabled and a bootable CD-ROM is installed, the system will boot from this CD-ROM.
  • Page 140 Introduction A variety of support information is available to help you set up, configure, and operate your Prioris XL 6000 Series server. This information comes in the form of README information, on-line help, electronic books, or as printed material. If you want to...
  • Page 141 Product Reference and Support If you want to... Refer to the... Upgrade and configure your server Information supplied in this System after installing optional components Reference. (for example, a CPU, memory, Supplied SCSI and other options mass storage devices, SCSI documentation.

  • Page 142: Technical Specifications

    Technical Specifications Introduction This appendix provides the following technical characteristics for your server: • Server specifications • ISA expansion slots • PCI expansion slots • Power supply input power requirements • Power supply output specifications • Power cord requirements • Main logic board jumper settings •...

  • Page 143: Performance Specifications

    Technical Specifications Performance Specifications Attributes Specification Bus clock 7.5/8.33 MHz 30/33 MHz Data I/O 8-bit and 16-bit 32-bit Memory 72-bit DIMMs, single-banked, ECC memory 72-bit DIMMs, double-banked, EDO memory 32 MB minimum (16 MB minimum, XLe configuration) 512 MB (ECC protected memory) maximum System flash ROM 128 KB BIOS...

  • Page 144: Environmental Specifications

    Technical Specifications Environmental Specifications Attributes Specification Operating temperature 10°C to 35°C (50°F to 95°F) Storage temperature -20°C to 65°C (-4°F to 149°F) Operating humidity 20% to 80% relative humidity, (noncondensing) maximum wet bulb 35°C (95°F) Storage humidity 10% to 90% relative humidity, (noncondensing) maximum wet bulb 65°C (149°F) Altitude...

  • Page 145: Power Supply Input Power Requirements

    Technical Specifications Power Supply Input Power Requirements The 300 W power supply provides five dc voltages: +12 V dc, -12 V dc, +5 V dc, -5 V dc, and 3.3 V dc. These voltages are used by the various components within the server.

  • Page 146: Environmental Features

    Class I ODS, as defined in Title VI, section 611 of the clean air act amendments of 1990. Use of asbestos Digital Equipment Corporation does not use asbestos in any form in the manufacturing of its products. Recycled paper in...

  • Page 147: Main Logic Board Jumper Settings

    Technical Specifications Main Logic Board Jumper Settings The following table lists the main logic board jumper and factory-default settings. Figure A-1 shows the jumper locations. CAUTION: Do not touch any electronic component unless you are safely grounded. Wear a grounded wrist strap or touch an exposed metal part of the server chassis.
  • Page 148 Technical Specifications Figure A-1. Main Logic Board Jumper Locations...

  • Page 149: Server Cpu Voltage And Temperature Ranges

    Technical Specifications Server CPU Voltage and Temperature Ranges The following tables list the CPU and Voltage Regulator Module (VRM) operating voltage and temperature ranges. CPU Voltage Range Nominal Nominal Tolerance Normal Voltage Server Error Server Shutdown Percentage Range Occurs Occurs -10 to + 10 +10.8 to +13.2 V <+9.0 V...

  • Page 150: Device Mapping

    Device Mapping Introduction This appendix provides a series of tables listing map and address information related to server memory and various main logic board devices (keyboard controller and interrupt controller). Your server memory and address locations are allocated at the factory to operate within a standard environment.

  • Page 151: Cpu Memory Address Map

    Device Mapping CPU Memory Address Map Address Range Function Size 00000 to 9FFFF Main memory 640 KB A0000 to BFFFF PCI/ISA video or SMM buffer 128 KB memory C0000 to DFFFF PCI/ISA expansion board BIOS 128 KB and buffer memory E0000 to EFFFF ISA adapter RAM (non-shadow) 64 KB...

  • Page 152: Pci Configuration Space Address Map

    Server Interrupt Levels Interrupt Number Interrupt Source IRQ1 Keyboard controller IRQ3 COM2, COM4 (if enabled) IRQ4 COM1, COM3 (if enabled) IRQ6 Diskette controller (if enabled) IRQ7 LPT1, LPT2, LPT3 (if enabled) IRQ12 Mouse interrupt IRQ13 Math co-processor PCI Configuration Space Address Map PCI Bus No.
  • Page 153 SCU Features Introduction After entering the SCU, you can edit a variety of resources and configure your server for the most optimized condition. The six steps or menu items of the SCU, listed as menu pages below, provide the necessary options to configure your server.
  • Page 154 SCU Features Step 1: About System Configuration Use this step to learn more about configuring your system and to obtain information about the AMI SCU.. Step 2: Add and Remove Boards Use this step if you want to manually add or delete ISA boards or to move boards from one slot to another, use this step.

  • Page 155: Systems Group

    SCU Features Systems Group Menu Fields Settings Comments System identification Not user selectable Displays the system identification string screen. Config and overlay Not user selectable Displays the SCU configuration and version overlay version number. BIOS version string Not user selectable Displays the BIOS version, X.XX.XX.DMO.

  • Page 156: Onboard Communication Devices

    SCU Features Onboard Communication Devices Menu Fields Settings Comments Serial port 1 Enables or disables onboard serial Port: 3F8h (IRQ4) configuraion port 1 at the specified address and Port: 2F8h (IRQ3) IRQ. Port: 3E8h (IRQ4) Port: 2E8h (IRQ3) Port 1 disable Serial port 2 Enables or disables onboard serial Port: 2F8h (IRQ3)

  • Page 157: Floppy Drive Subsystems Group

    SCU Features Floppy Drive Subsystems Group Menu Fields Settings Comments Floppy drive A Sets the size and density of diskette drives. 3.5” 1.44 MB drive options 5.25” 360 KB drive 5.25” 1.2 MB drive 3.5” 720 KB drive 3.5” 2.88 MB drive Disable or not installed Floppy drive B Sets the size and density of diskette drives.

  • Page 158: Console Redirection

    SCU Features Keyboard (KB) and Mouse Subsystem Group Menu Fields Settings Comments Numlock Selects the keyboard Numlock option. Off at boot On at boot Typematic speed Sets the number of times a second to repeat a Auto keystroke while you hold the key down. 6 char/sec 8 char/sec 10 char/sec...

  • Page 159: Security Subsystems Group

    SCU Features Security Subsystems Group Menu Fields Settings Comments Administrative Press [Enter] to display the Password Menu. After Disable password option entering a new password, <Tab> down to verify the Enable password. Type your administrative password in the enter Enter password password field.

  • Page 160: Boot Subsystem Group

    SCU Features Boot Subsystem Group Menu Fields Settings Comments First boot device Each time your server boots, it will load your Boot floppy operating system from the sequence selected. Boot hard disk Boot IDE CD-ROM Boot network Second boot Boot disabled Each time your server boots, it will load your device Boot floppy...

  • Page 161: Management Subsystem Group

    SCU Features Management Subsystem Group Menu Fields Settings Comments System sensor Press [Enter] Press [Enter] to modify the server’s control temperature and voltage sensors for proper operation. Speaker options Enables or disables your server’s Enable speaker. Disable Scan user flash Enabling this option causes the Disable area...

  • Page 162: System Management Options

    SCU Features System Management Options Menu Fields Settings Comments System Enabling this option loads the Disable management embedded server management Enable mode firmware. Event logging Enabling this option causes the Disable BIOS to log critical and informational Enable events to non-volatile flash memory. PCI system error When enabled, if a PCI bus error Disable...

  • Page 163: Caring For Your Server

    Caring For Your Server Introduction This appendix describes how to: • Clean the outside of the server • Clean the monitor screen • Clean the mouse • Pack and move the server CAUTION: Make sure you turn off the server and disconnect any external devices before doing any cleaning.

  • Page 164: Cleaning The Mouse

    Caring For Your Server Cleaning the Mouse If your mouse cursor moves erratically across the screen, the ball on the bottom of the mouse is probably dirty. Perform the following steps to clean a mouse ball: 1. Turn the mouse over and release the ball cover. 2.

  • Page 165: Installing The Server At A New Location

    Caring For Your Server Packing the Server If you are moving the server a short distance (from one room to another in the same building), you do not have to pack the server. If you are shipping the server or moving it by vehicle, pack the server to avoid damage. Pack server in the original packing material and containers.

  • Page 166: Block Diagram

    Block Diagram Introduction The main logic board (MLB) block diagram is shown in Figure E-1. The MLB integrates the Dual-P6 CPU with both EISA and PCI system peripheral devices. The MLB provides the following functions: • PC-compatible serial (2), parallel, keyboard, and serial mouse ports •...
  • Page 167 Block Diagram Pentium Pro Processor Processor Power GTL + Bus Termination Processor Power GTL + Bus Termination PCI and Memory Main Memory Data Bus Controller (PMC) (up to 1 GB) Accelerator (DBX) Private Control/Data Bus Network SCSI Video Controller Connectors (3) PCI Bus PCI/ISA/IDE Accelerator...
  • Page 168 Block Diagram Flash ROM Flash ROM stores the system BIOS in 256KB of flash memory. Flash memory allows the BIOS to be upgraded from a diskette or CD-ROM, such as Quick Launch. Real-Time Clock (RTC) The Real-Time Clock contains 128 bytes of general purpose RAM that stores system BIOS configuration information, clock registers, and general purpose control registers.

  • Page 169: Serial Interface

    Block Diagram System I/O Functions System input and output functions are controlled by the Super I/O controller. This controller supports two serial UARTs, one parallel port, and the diskette controller. It provides a buffer for the serial ports, and EPP/ECP modes for the parallel port. The diskette controller has support for 360KB, 720KB, 1.2MB, 1.44MB, and 2.88MB disks.

  • Page 170: Parallel Interface

    Block Diagram Parallel Interface The parallel interface LPT1 port is accessible through the rear panel 25-pin D-type connector. It is an AT and Centronics compatible bi-directional parallel port. The user can select the printer port to be in either PS/2-compatible mode or extended parallel port (EPP) bi-directional mode through Setup.

  • Page 171: Diskette Controller

    Block Diagram Diskette Controller The Super I/O also has a floppy disk drive (FDD) controller which supports two diskette drive devices through a daisy-chained ribbon cable. Data transfer rates are selectable to be 250/300 Kb/s or 500/1000 Kb/s. These rates are compatible with the 5.25”...
  • Page 172 Block Diagram Pin Number Function Red Video Green Video Blue Video Monitor ID Bit 2 (not used) Ground Red Return (ground) Green Return (ground) Blue Return (ground) +5V supply (optional) ync Return (ground) Monitor ID bit 0 (not used) Data from Display Horizontal Sync Vertical Sync (VCLK) Not used...

  • Page 173: Scsi Controller

    Block Diagram SCSI Controller The PCI SCSI controller (7880) supports the ultra internal narrow and internal wide SCSI connectors. The internal wide SCSI connector supports the storage backplane and hard disks. The internal narrow SCSI supports tape drives and the CD-ROM. The SCSI bus has active termination on the MLB, with each byte (high 8 bits and low 8 bits) capable of being enabled separately.

  • Page 174: Pci Bus

    Block Diagram PCI Bus The Peripheral Component Interconnect (PCI) bus provides three physical address spaces: • 32-bit memory • 32-bit I/O • 256 byte-per-agent configuration space. The PCI bus supports 8-bit, 16-bit, and 32-bit data transfers at a bus clock speed of 30 or 33 MHz depending on CPU speed.

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