Chapter 2. System Overview

This chapter provides general information about the rackmount configuration of the Silicon Graphics® Tezro™ visual workstation in the following sections:

System Features

This workstation is a high-performance system. It provides VPro™ graphics, 64-bit MIPS processors, and a high-bandwidth architecture in a convenient rackmount form factor. Features of the system include the following:

  • High-speed system architecture, available with 1, 2, or 4 processors.

  • VPro graphics with dual-channel, dual-head, and digital media options.

  • Scalable system memory, with capacities from 512 MB to 16 GB.

  • Ultra3 SCSI internal hard-disk drives, which provide large internal storage capacities and fast access times.

  • Two PCI/PCI-X compatible card buses with three available slots (four buses and seven available slots in dual-enclosure configurations).

  • IO9 system I/O board for efficient control of internal and external I/O.

  • Single- or dual-enclosure factory configuration. The optional second enclosure provides additional memory and PCI-X capacity and can also be configured with a graphics or digital media board. See Appendix D, “Dual-User Option Information” for information on using an additional graphics board, monitor, keyboard and mouse.

    Figure 2-1. Single- and Dual-enclosure Rackmount Workstations

    Single- and Dual-enclosure Rackmount Workstations

System Components

The components of the workstation are covered in the following sections:

External Components

This section describes the front and rear panels of the workstation and the optional second enclosure in the following sections:

Front Panel Components

The front panel of the workstation has the following components (see Figure 2-2):

  • L1 controller display. A liquid crystal display (LCD) displays status and error messages generated by the L1 controller.


    Note: See the SGI L1 and L2 Controller Software User's Guide (007-3938-00x) and “L1 Controller Error Messages” in Chapter 4 for more information on the L1 controller.


  • Power button with LED. Press this button to power on the workstation. The LED illuminates green when the internal components are on.

  • Reset switch. Activate this recessed switch with a paperclip to reset the workstation. The reset will cause a memory loss. (To perform a reset without losing memory, see the NMI switch information that follows.)

  • NMI switch. Activate the recessed NMI (non-maskable interrupt) switch with a paperclip to reset the system without losing memory. Register data and memory are stored in a /var/adm/crash file.

  • Service-required LED. This LED illuminates yellow to indicate that a component has failed or is not operating properly, but the workstation is still operating.

  • Failure LED. This LED illuminates red to indicate that a failure has occurred and that the workstation is down.

    Figure 2-2. Front Panel Components

    Front Panel Components


    Note: The first and second enclosures of a dual-enclosure system have the same front panel components.


Rear Panel Components

This section describes the rear panel connectors, PCI/PCI–X slots, and LEDs of the workstation enclosures (see Figure 2-3). The rear panel of the first workstation enclosure has the following components:

  • Power connector. This connector connects the workstation enclosure(s) to an AC power outlet.

  • Console port.  This DB–9 serial port (console and diagnostic port) connects a system console to the L1 controller.

  • Serial port 1. This DB-9 RS-232/RS-422 serial port connects a serial device such as a printer to the workstation.

  • L1 port (USB type B). This connector is not used.

  • System interconnect. This system interconnect cable connects the two enclosures of a dual-enclosure workstation. This connection is made with an interconnect cable at 1.6 GB/s in each direction.

    • System interconnect LED. The connector has two LEDs, one that illuminates yellow and one that illuminates green (located to the right of the connector). The yellow LED indicates that the workstation enclosures are powered on. The green LED indicates that the connection between the enclosures is functioning.

  • PCI/PCI–X slots (bus 1, slot 1; bus 1, slot 2; bus 2, slot 1; bus 2, slot 2). These slots are labeled from bottom to top PCI 1, PCI 2, PCI 3, and PCI 4. Two of these slots are on one bus, and two slots are on another. These are 64-bit slots that can house 33-MHz and 66-MHz PCI cards or 66-MHz, 100-MHz, or 133-MHz PCI–X cards. (See SGI Supportfolio at http://support.sgi.com for an updated list of supported cards.) The bottom-most slot of the first enclosure always contains an IO9 PCI card.

The serial daughtercard provides the following connectors:

  • Two PS/2 ports (keyboard and mouse). These ports connect a PS/2 keyboard and mouse to the system.

  • Serial ports 2, 3, and 4. These three DB-9 RS-232/RS-422 serial ports connect serial devices such as printers to the system.


    Note: The serial daughter-board is not available in the second enclosure of a dual-enclosure workstation.


The factory-installed IO9 board provides the following connectors:

  • Real-time interrupt input and output. RTO (output) enables the compute module to interrupt an external device. RTI (input) enables an external device to interrupt the workstation.

  • Ethernet port (10/100/1000 Mbits).  This auto-negotiating 10BaseT/100BaseT/1000BaseT twisted-pair Ethernet port connects the workstation to an Ethernet network.

  • External SCSI connector. This 68-pin VHDCI external SCSI port connects SCSI devices to the workstation. See SGI Supportfolio at http://support.sgi.com for an updated list of supported SCSI devices.

The rear panel of the optional second workstation enclosure has the following components:

  • Power connector. This connector connects the enclosure(s) to an AC power outlet.

  • Console port.  This DB–9 serial port (console and diagnostic port) enables you to connect a system console to the L1 controller.

  • Serial port 1. This connector is not functional unless an IO9 board is installed in the enclosure. When an IO9 board is present, this DB-9 RS-232/RS-422 serial port connects a serial device to the workstation.

  • L1 port (USB type B). This connector is not used.

  • System interconnect connector. This connector joins the two enclosures of a dual-enclosure workstation. This connection is made with a cable at 1.6 GB/s in each direction.

    • System interconnect LED. The connector has two LEDs, one that illuminates yellow and one that illuminates green (located to the right of the connector). The yellow LED indicates that the workstation enclosures are powered on. The green LED indicates that the connection between the enclosures is functioning.

  • PCI/PCI–X slots (bus 1, slot 1; bus 1, slot 2; bus 2, slot 1; bus 2, slot 2). These slots are identical to those in the first enclosure.

  • Additional graphics or digital media option board. The second enclosure may or may not contain a graphics or digital media option board.

    Figure 2-3. Rear Panel Components

    Rear Panel Components

Internal Components

The workstation is based on a node board/interface board pair. The node board supplies connectivity and power to the memory DIMMs and processor(s). The remainder of the system components are connected to the interface board, as shown in Figure 2-4.

Figure 2-4. System Architecture


System Architecture

The following sections contain more information about the internal components of the workstation:

Processors

The first workstation enclosure is available with 1, 2, or 4 R16000 MIPS processors. Each processor has a total of 64 KB of onboard cache and 4 MB of external cache. The optional second enclosure does not contain any processors.

Memory DIMMs

The single-enclosure workstation can be configured with a minimum of 512 MB of memory and a maximum of 8 GB of memory. The dual-enclosure workstation can be configured with up to 16 GB of memory. The workstation uses double data rate synchronous dynamic random access memory (DDR SDRAM).

The memory DIMMS are installed in eight DIMM sockets on the system node board. The DIMM sockets are numbered 0 through 7 (see Figure 2-5). The sockets are grouped into four pairs of two DIMMs. The DIMM pairs are numbered as follows:

  • DIMM pair 1: slots 0 and 1

  • DIMM pair 2: slots 2 and 3

  • DIMM pair 3: slots 4 and 5

  • DIMM pair 4: slots 6 and 7

    Figure 2-5. DIMM Sockets and Pairs

    DIMM Sockets and Pairs

The following configuration rules apply to the memory banks and DIMMs in your system:

  • DIMM pair 1 must be present.

  • DIMMs in the same DIMM pair must be the same density. For example, if DIMM 0 is 512 MB, then DIMM 1 must be 512 MB.

  • DIMMs must be installed in pairs.

  • DIMM pairs should be added in sequence. For example, if there are DIMMs installed in pair 1, the next DIMMs should be installed in pair 2.

  • The minimum amount of memory for a 1-processor workstation is 512 MB; the minimum for a 2- or 4-processor workstation is 1 GB.

  • The maximum memory configuration for a single-enclosure workstation is 8 GB; dual-enclosure workstations have a maximum memory capacity of 16 GB.

For information on removing or installing memory DIMMs, see “Memory” in Chapter 3.

IO9 Board

The IO9 is the full-length PCI board installed in PCI bus 1, slot 1. It provides the following I/O connectors and interfaces for the workstation:

  • Internal IDE connector for the optional DVD-ROM drive

  • Internal SCSI connector for the internal hard disk drive(s)

  • External SCSI connector for optional external drives

  • Real-time interrupt in and out (RTI and RTO) connectors

  • 10/100/1000BaseT Ethernet connector (RJ45)

The serial daughtercard, which provides three serial ports and two PS/2 ports on the rear of the workstation, is controlled by the IO9 board. The IO9 board also contains the NVRAM and time-of-day clock for the system.

Both single-enclosure and dual-enclosure workstations are limited to one IO9 board.

For technical specifications and pinout of these connectors, see Appendix A, “Technical Specifications and Pinouts”.

Internal Hard Disk Drives

The workstation supports one or two internal hard disk drives, which are located on the left side of the front of the workstation (see Figure 2-6). These Ultra 160 SCSI drives provide large storage capacities and fast access times.

The hard disk drives in the workstation are sled mounted. The drive sleds provide a safe and easy way to install and remove the drives without tools. The drive sleds also provides a positive, locking connection to the SCSI backplane, which connects the disk drives to the IO9 board.

The disks are numbered 1 and 2, with 1 being the bottom disk and 2 being the top. The SCSI ID number of each disk must correspond with these drive numbers. Disk 1 is the system disk, which has the IRIX operating system installed on it. Your workstation will not function without the system disk.

For information on removing or installing an internal hard disk drive, see “Disk Drives” in Chapter 3.

Figure 2-6. Internal Hard Disk Drives and DVD-ROM Drive

Internal Hard Disk Drives and DVD-ROM Drive

DVD-ROM Drive

Your workstation supports an optional internal DVD-ROM drive. The DVD-ROM drive is capable of reading the following formats:

  • DVD-RAM

  • DVD-R

  • Single layer (DVD-5)

  • Dual layer (DVD-9)

  • CD-ROM (audio and data)

The drive is installed in the half-height drive bay above the hard disk drives, as shown in Figure 2-6.

VPro™ Graphics Board

The VPro graphics board is located at the rear of your workstation. It connects to the back side of the PCI riser board.

The VPro graphics board has the following features:

  • 128 MB of onboard SDRAM.

  • Analog RGB and TMDS video on a single DVI-I monitor port.

  • Additional ports for Swap ready, Stereo View, and Genlock signals.

The VPro graphics board supports an optional Dual Channel Display daughterboard which is equipped with two DVI-I monitor ports. The daughterboard connects to the underside of the VPro graphics board and allows you to display data across two monitors at once. For more information about the optional Dual Channel Display daughterboard, contact your SGI sales representative or visit http://www.sgi.com .

For more information on the VPro graphics board and Dual Channel Display I/O ports, see “VPro™ Graphics Board I/O Port Specifications” in Appendix A.

PCI Buses

The workstation provides slots for four 64-bit, 3.3-V PCI-X boards. The boards are installed in slots on the PCI riser board. The slots are divided into 2 busses:

  • PCI bus 1 has two slots, numbered 1 and 2. Bus 1, slot 1 always contains the IO9 card.


    Note: The IO9 board is a full-length PCI board that runs at 66 MHz. Installing a PCI-X board on the same bus as the IO9 will force the PCI-X board to run at 66 MHz.


  • PCI Bus 2 has two slots, numbered 1 and 2.

  • Bus 1, slot 1 is the lowest slot. Bus 2, slot 2 is the highest slot.

  • These slots are labeled PCI 1, PCI 2, PCI 3, and PCI 4 on the outside of the enclosure. PCI 1 corresponds to Bus 1, slot 1. PCI 4 corresponds to Bus 2, slot 2.

The optional second enclosure also contains a PCI riser board. The slot numbering and bus speeds are identical to those in the base enclosure.

See “PCI Boards” or contact your SGI sales representative for a list of available PCI boards.

Power Supply

The power supply for the workstation is located in the right front corner of the chassis, as shown in Figure 2-7.

Figure 2-7. Power Supply Location

Power Supply Location

The power supply accepts 110/220 VAC input and provides up to 500 watts of power at 12 VDC, 5 VDC, and -12 VDC. For detailed information about the power supply specifications, see Appendix A, “Technical Specifications and Pinouts”. For installation and removal instructions for the power supply, see “Power Supplies” in Chapter 3.

Optional Components , Peripherals, and Upgrades

Various optional components, peripherals, and upgrades are available for your workstation. The following sections give a brief overview of some of the available products:

PCI Boards

The following are some of the PCI boards that are available for your workstation:

  • SCSI boards:
    Dual-port Ultra3 SCSI LVD or single-ended SCSI adapter

  • Fibre Channel boards:
    Single-port 1-Gbit Fibre Channel board with optical or copper connector
    Single- and dual-port 2-Gbit Fibre Channel boards with optical connectors

  • Networking boards:
    33- and 64-MHz, 64-bit single-port ATM boards
    1-port copper gigabit Ethernet adapter
    1-port 1000BaseSX gigabit Ethernet adapter

  • Media boards:
    DMediaPro DM8 Audio I/O PCI option
    DMediaPro DM10 IEEE1394 Digital Audio/Video option
    DMediaPro DM6 Standard-definition video I/O option

See SGI Supportfolio at http://support.sgi.com for an updated list of available cards.

Memory Upgrades

The following memory upgrades are available for the workstation:

  • 512-MB DIMM pair

  • 1-GB DIMM pair

  • 2-GB DIMM pair


    Note: The single-enclosure workstation supports a maximum of eight memory DIMMs totalling eight GB. The dual-enclosure workstation can contain sixteen memory DIMMs, totalling 16 GB. Memory DIMMs must be installed in pairs of the same size.


Graphics Options

The following are some of the optional graphics components available with your workstation:

  • Dual-Channel Display daughterboard. This card attaches to the graphics board and allows data to be displayed across two monitors. It has two DVI-I video ports.

  • Dual-head VPro™ graphics option. Dual-enclosure workstations can be configured with a second VPro graphics board.

Storage Options

The following storage upgrades are available for the workstation:

  • Additional Internal Ultra SCSI hard disk drives

  • External SCSI DAT drive

  • Internal DVD-ROM drive

In addition to the items listed above, various other storage solutions are available from SGI. For more information, contact your SGI sales representative.

Displays

The following displays are available with the workstation:

  • 22-in. SGI cathode ray tube (CRT) monitor

  • 24-in. SGI CRT monitor

  • Silicon Graphics flat panel display

Peripherals

The following peripherals are available with the workstation:

  • 3-button mouse

  • Beeping keyboard

  • Speakers

For a complete list of available components, contact your SGI sales representative or see the following website:

http://www.sgi.com/peripherals/workstation/index.html