The SGI Origin 300 server is a 2U-high system that consists of two or four 64-bit MIPS RISC (reduced instruction set computer) processors. A single system image (SSI) of 4, 6, or 8 processors is available by interconnecting two SGI Origin 300 servers via a NUMAlink 3 cable.
Each SGI Origin 300 server has from 512 MB to 4 GB of local memory available on four memory DIMMs (dual-inline memory modules). As much as 8 GB of memory is addressable when two SGI Origin 300 servers are connected via a NUMAlink 3 cable.
The server:
Houses one or two sled-mounted Ultra3 SCSI disk drives that have a peak data transfer speed of up to 160 MB/s between the disks and system memory. For storage expandability, the server can connect to a 2U 8-disk Ultra3/160 SCSI JBOD SGI Total Performance 900 (TP900) storage system.
Contains two PCI 2.2-compliant option card slots that are configured on one bus. The two universal PCI slots support both 32- and 64-bit addressing modes at 33 or 66 MHz. For I/O expandability, the server can connect to a peer-attached PCI expansion module.
Supports two USB (universal serial bus) ports, one 10/100BaseT Ethernet port, two serial ports, real-time (RT) interrupt input and output ports, one external Ultra3 SCSI port, one L1 port, one console port, and one NUMAlink 3 port.
Has a Crosstown2 port that connects the server to an InfiniteReality graphics pipeline.
This chapter provides an overview of the server as follows:
The SGI Origin 300 server is a multiprocessor system that consists of one or two chassis. A two-chassis system uses a NUMAlink 3 cable to interconnect the two chassis. The server is available in stand-alone configurations and industry-standard rackmountable configurations.
Figure 1-1 shows a front and side view of an SGI Origin 300 server.
Figure 1-2 shows the rear and side view of an SGI Origin 300 server.
Table 1-1 lists the physical and environmental specifications for the SGI Origin 300 server.
Table 1-1. Physical and Environmental Specifications
Height | 3.46 inches (8.80 cm) |
Width | 19.0 inches (48.3 cm) (front panel width) |
Depth | 26 inches (66 cm) (without bezel) |
Weight | 36.0 lbs (16.4 kg) |
Temperature, | +5 ˚C (+41 ˚F) to +35 ˚C (+95 ˚F) (up to 1500 m / 5000 ft) |
Temperature, | -40 ˚C (-40 ˚F) to +60 ˚C (+140 ˚F) |
Humidity | 10% to 95% RH, noncondensing |
Altitude | Sea level to 40,000 ft (nonoperating) |
Noise | 50 dB(A) maximum |
Heat dissipation | 938 Btu/hr maximum |
This section describes the front controls and indicators of the SGI Origin 300 server, as shown in Figure 1-3.
The front panel of the server has the following items:
L1 controller display. A liquid crystal display (LCD) that displays status and error messages that the L1 controller generates.
Note: Refer to the SGI L1 and L2 Controller Software User's Guide (007-3938-00x) for more information on the L1 controller. Power button with LED. Press this button to power on the internal components. Alternatively, you can power on the internal components at a system console. The LED illuminates green when the internal components are on.
Reset button. Press this button to reset the internal processors and ASICs. The reset will cause a memory loss. (Refer to the non-maskable interrupt [NMI] to perform a reset without losing memory.)
Non-maskable interrupt (NMI) button. Press this button to reset the internal processors and ASICs 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 an item has failed or is not operating properly, but the server is still operating.
Failure LED. This LED illuminates red to indicate that a failure has occurred and the server is down.
Drive LEDs. These LEDs illuminate green to indicate drive activity.
This section describes the rear panel I/O ports and features of the SGI Origin 300 server, as shown in Figure 1-4.
The rear panel of the server has the following items:
Power connector. This connector connects the server to an AC power outlet.
LINK connector. This NUMAlink connector connects the server to another SGI Origin 300 server or to a peer-attached PCI expansion module. This connection is made with a NUMAlink 3 cable at 1.6 GB/s in each direction.
XIO connector. This Crosstown2 connector connects an SGI Origin 300 server to an InfiniteReality graphics pipeline. This connection is made with a NUMAlink 3 cable at 800 MB/s in each direction.
L1 console port. This port (console and diagnostic port) connects the server's L1 controller to a system console.
USB L1 port. This universal serial bus (USB) connector connects the server's L1 controller to an L2 controller.
PCI slots 1 and 2. These slots house the PCI cards. The two PCI 2.2-compliant slots are configured on one bus. The PCI bus supports both 32- and 64-bit modes at 33 or 66 MHz. Refer to the SGI Supportfolio online home page at http://support.sgi.com for an updated list of supported PCI cards.
Serial ports 1 and 2. These ports can be used as COM ports to connect modems or other serial devices.
USB ports 1 and 2. These ports can connect to auxiliary equipment such as a keyboard or a mouse.
RT interrupt input and output. These real-time interrupts are used by the graphics cards to keep the graphics synchronized.
Ethernet port. This autonegotiating 10BaseT or 100BaseT twisted-pair Ethernet port connects the server to an Ethernet network.
External SCSI connector. This 68-pin VHDCI external SCSI port connects to SCSI devices. Refer to the SGI Supportfolio online home page at http://support.sgi.com for an updated list of supported SCSI devices.
Heartbeat LEDs (4). These LEDs, one for each processor (A, B, C, and D), indicate processor activity.
The internal components of the Origin 300 server are described in the following sections:
The IP45 motherboard houses the following components:
Two or four MIPS RISC processors (each processor has a secondary (L2) cache).
Four dual-inline memory module (DIMM) slots that are organized as two banks of memory per two DIMM slots (four banks total), and configurable from 512 MB to 4 GB of main memory. Refer to “Dual-inline Memory Modules (DIMMs)” for more information on DIMMs.
Xbridge ASIC (application-specific integrated circuit) that is the interface between the Bedrock ASIC and the PCI slots.
Bedrock ASIC (or hub ASIC) that enables communication between the processors, memory, and I/O devices.
Serial ID EEPROM that contains component information.
L1 controller logic that monitors and controls the environment of the server (for example, fan speed, operating temperature, and system LEDs). Refer to the SGI L1 and L2 Controller Software User's Guide (007-3938-00x) for more information on the L1 controller.
Five VRMs that convert the incoming voltages to the voltage levels required by the components.
Light-emitting diodes (LEDs) that provide information about the NUMAlink port and the processor:
Two NUMAlink 3 LEDs, controlled by the L1 controller
Four heartbeat LEDs, controlled by the Bedrock ASIC
Each SGI Origin 300 server has from 512 MB to 4 GB of local memory, which includes main memory and directory memory for cache coherence.
Local memory can consist of two or four banks that are referred to as banks 0, 1, 2, and 3. The four banks are arranged as two DIMM pairs; DIMM pair 0 and DIMM pair 1. Pair 0 consists of banks 0 and 1; pair 1 consists of banks 2 and 3. Each pair of banks consists of two dual-inline memory modules (DIMMs) that contain double data rate synchronous dynamic random-access memory (DDR SDRAM chips).
Memory is increased or decreased in two-DIMM increments only. The two DIMMs that make up a bank pair must be the same memory size; however, each pair of DIMMs can be a different memory size. Figure 1-5 shows the layout of the memory banks.
| Note: The DIMMs used in the SGI Origin 300 server are not compatible with the DIMMs used in Origin 200, SGI 2000 series, Onyx2, or Octane systems. |
The SGI Origin 300 server supports three memory kits:
512-MB kit with integrated directory memory.
1-GB kit with integrated directory memory.
2-GB kit with integrated directory memory.
The I/O-8 board assembly consists of a main I/O-8 board, an I/O-8 daughtercard, and a PCI riser card. The assembly provides I/O interface functions, the I/O connectors to the system backpanel, and the L1 controller functions.
The I/O-8 board assembly has the following connectors at the bulkhead:
One 68-pin VHDCI external SCSI connector
One 10BaseT/100BaseT auto-selecting Ethernet connector
One DB9 RS-232 L1 console connector
Two 4-pin USB ports
One 4-pin USB L1 port
Two RS-232 or RS-422 115.2 Kbaud-capable DB9 async ports with modem control
One real-time (RT) interrupt output port
One RT interrupt input port
The PCI riser card provides a connection between the IP45 motherboard and the I/O-8 board assembly, while also providing two PCI card slots. The PCI riser card has the following connectors:
One connector that connects the PCI riser card to the IP45 motherboard
Two 64-bit universal PCI connectors that seat the PCI cards
One nonstandard PCI connector that connects to the I/O-8 board assembly
One 50-pin AMP connector that connects to the I/O-8 board assembly
The SCSI backplane provides a connection between the internal SCSI interface on the I/O-8 board and up to two disk drives. The SCSI backplane supports Ultra3 SCSI LVD disks with a peak transfer rate of 160 MB/s. Refer to the SGI Supportfolio online home page at http://support.sgi.com for an updated list of supported drives.
The chassis accommodates up to two sled-mounted 3.5-inch by 1.0-inch Ultra3 SCSI LVD drives. The backplane supports 10,000-RPM and 15,000-RPM drives.
The SGI Origin 300 server uses a nonredundant modified WTX power supply with an input of 110/220 Vac (autosensing) and a maximum output of 460 W (3.3/5/12Vdc). The DC power from the power supply is delivered via a cable harness, which has multiple connectors for power delivery.
For storage expandability, the SGI Origin 300 server can connect to a 2U 8-disk Ultra3/160 SCSI JBOD TP900 system. Refer to SGI Total Performance 900 Storage System User's Guide (007-4428-00x) for information on the SGI TP900 storage system.
For I/O expandability, the SGI Origin 300 server can connect to a PCI expansion module via the NUMAlink 3 port. For more information about the PCI expansion module, refer to the PCI Expansion Module User's Guide (007-4499-00x).
Table 1-2 summarizes the general features of the SGI Origin 300 server.
Table 1-2. General Features of the SGI Origin 300 Server
Feature | One-chassis System | Two-chassis System |
|---|---|---|
MIPS RISC processors | 2 or 4 | 4, 6, or 8 |
Memory | 512 MB to 4 GB | 1 GB to 8 GB |
I/O expansion slots | Two 32- or 64-bit (33- or 66-MHz) PCI slots | Four 32- or 64-bit (33- or 66-MHz) PCI slots |
Serial ports | Two DB-9 RS-232 or RS-422 | Four DB-9 RS-232 or RS-422 |
Ethernet port | One 10BaseT or 100BaseT | Two 10BaseT or 100BaseT |
SCSI channel (internal) | One Ultra3 SCSI, 160 MB/s | Two Ultra3 SCSI, 160 MB/s |
SCSI channel (external) | One Ultra3 SCSI (VHDCI) | Two Ultra3 SCSI (VHDCI) |
3.5-inch drive bays | Two | Four |
USB ports | Three | Six |
RT interrupt input port | One | Two |
RT interrupt output port | One | Two |
L1 console port | One | One |
NUMAlink port | One | N/A |
XIO port | One | Two |