The Silicon Graphics Tezro visual workstation is installed in the system enclosure as shown in Figure 2-1 and Figure 2-2. The enclosure provides structure and protection for the internal components.

The workstation is powered by an IP53 system node board (see Figure 2-3). The system node board provides a mounting point and connectivity for the processor(s) and memory DIMMs. The node board connects to the interface board via two connectors on its underside.

The workstation is available with 1, 2, or 4 R16000 MIPS processors. These processors are available in several different clock speeds. Each processor has a total of 64 KB onboard cache memory and 4-MB of external cache memory. The processors are mounted on the system node board under a protective cover.

The workstation is configured with a minimum of 512 MB of memory and a maximum of 8 GB of memory. Your system uses double data rate synchronous dynamic random-access memory (DDR SDRAM). The DIMMs used in your workstation are compatible with the DIMMs used in Origin 300, Origin 3000, and Onyx 3000 systems. The DIMMs used in your workstation are not compatible with the DIMMs used in Octane, Octane2, O2, O2+, Origin 200, Origin 2000, or Onyx2 systems.

The memory DIMMS are installed in eight DIMM slots on the system node board. The DIMM slots are numbered 0 through 7 (see Figure 2-4). The slots are grouped into four pairs of two DIMMs. The DIMM pairs are numbered as follows:

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

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

The interface board connects the processors and memory mounted on the node board to the graphics and I/O components of the system. It also provides card slots for the PCI and graphics boards and distributes power to the system components. The interface board has the following connectors (see Figure 2-5):

The interface board also supplies connectivity and power to many of the system components through the following connectors (see Figure 2-5):

The IO9 board is the full-length PCI board that is installed in PCI bus 1, slot 1. It provides the following I/O connectors and interfaces for the workstation (see Figure 2-6):

The IO9 board also contains the non-volatile RAM and time-of-day clock for the system.

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

The I/O daughtercard is the long narrow board that is mounted on the rear of the enclosure just below the power supply. This card acts as an extension of the IO9 board; it provides the following connectors (see Figure 2-7):

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

The Silicon Graphics Tezro visual workstation supports one or two internal SCSI hard disk drives. These drives provide the unit with large amounts of storage and quick access times.

The hard disk drives in the workstation are sled mounted (see Figure 2-8). The drive sleds provide a safe and easy way to install and remove the drives. The drive sleds also provides a positive, locking connection to the SCSI backplane, which connects the disk drives to the IO9 board (see Figure 2-9).

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, refer to “Installing or Removing Internal Hard Disk Drives” in Chapter 3.

Your workstation supports an optional internal DVD-ROM drive.

The drive is installed in the 5.25-in. drive bay, as shown in Figure 2-9.

For information about installing and removing the DVD-ROM drive, refer to “Installing or Removing the DVD-ROM Drive ” in Chapter 3.

The graphics module is located near the bottom of your workstation, as shown in Figure 2-10. It is made up of a metal cover, the VPro graphics board and the optional Dual Channel Display daughterboard. The metal shell protects the graphics board and optional daughterboard and shields them from electrical interference.

The VPro graphics board has the following features:

The optional Dual Channel Display (DCD-2) daughterboard supplies two additional 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.

Figure 2-11 shows the I/O ports of the VPro graphics board and optional Dual Channel Display daughterboard.

For more information on the VPro graphics board and Dual Channel Display (DCD-2) I/O ports, refer to “VPro Graphics Board I/O Port Specifications” in Appendix A.

The 2- and 4-processor workstations have eight 64-bit, 3.3-V PCI-X slots which are divided into four buses. The1-processor workstation has four 64-bit, 3.3-V PCI-X slots which are divided into two buses. The IO9 board always occupies bus 1, slot 1, leaving the remaining slots available for other boards. Each bus can support card speeds of up to 100 MHz. The slots are divided into buses, as shown in Figure 2-12.

Follow these rules when installing PCI and PCI-X boards on the PCI-X buses:

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

The power supply for the workstation is located in the top rear quadrant of the chassis, as shown in Figure 2-13.

The power supply provides up to 550 watts of power to the node and interface boards, internal hard disk drives, DVD-ROM drive, and other optional components installed in the enclosure. For detailed information about the power supply specifications, refer to Appendix A, “Technical Specifications and Pinouts”.

The workstation uses a total of eight fans to cool the internal components. The following components make up the cooling system (see Figure 2-14):

Various optional components, peripherals, and upgrades are available for your workstation. The following sections describe some of these options:

For more information about upgrading your system contact your SGI sales representative.