This chapter describes how to unpack and install your Altix 450 system. Specifically, the following topics are covered:
If you have arranged to have your system installed and set up by SGI professional services personnel, you can skip this chapter and go on to Chapter 2, “Operation Procedures”.
In this chapter, different installation instructions are provided for different types of system installations. Follow the instructions for your type of installation, as follows:
 | Note: It is assumed that you will be connecting a system console to your system in each installation case. |
If you have ordered a server system that is already rackmounted, which means that the modules that compose your system are also already cabled together, follow the instructions in these sections:
If you have ordered un-racked IRU modules with the intention of rackmounting and cabling your own server system, follow the instructions in these sections:
If you have ordered either a single– or dual-IRU system that you intend to install on a table top, follow the instructions in these sections:
If you have your own rack, and have ordered system modules with the intention of rackmounting and cabling your own system, follow the instructions in these sections:
Before you install an Altix 450 system, you should familiarize yourself with the safety precautions discussed in the following subsections:
During the installation of your Altix 450 system, be alert for hazard advisory statements with icons, which signify the following:
Caution indicates a potentially hazardous situation that, if not avoided, can result in minor or moderate injury. A caution statement also alerts you to unsafe practices that can result in equipment damage and/or data corruption. A caution message is accompanied by an icon as shown in the following example:
Caution: Warning indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury. A warning message is accompanied by icon as shown in the following example:
Warning: Danger indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. A danger message is accompanied by the same icon as a warning.
Observe electrostatic discharge (ESD) precautions during the entire installation process to eliminate possible ESD damage to the equipment. Wear an SGI-approved wrist strap when you handle an ESD-sensitive device. Connect the wrist strap cord directly to earth ground.
| Caution: Observe all ESD precautions. Failure to do so can result in damage to the equipment. |
Observe the following safety measures when you install the system:
Use caution when you remove the system from the shipping crate. Failure to handle the system carefully can result in personal injury or property damage.
Caution: Ensure that the shipping crate is positioned close to its destination before you unpack the crate. Warning: Employ a minimum of two people to lift an IRU, to move the IRU(s) from one location to another, and to install the IRU(s) in a rack. Otherwise, someone could be seriously injured. Note that IRUs should have blades and power supplies removed to make the unit easier to lift and position. Do not move the system while it is connected to power.
Warning: Keep fingers and conductive tools away from high-voltage areas. Failure to follow these precautions will result in serious injury or death. The high-voltage areas of the system are indicated with high-voltage warning labels. Ensure that a qualified electrician has properly installed the power receptacles.
Set all PDU circuit breakers to the OFF (O) position before you plug in the system power cord.
Warning: Use the following guidelines to prevent the rack from toppling over. Otherwise, people could be seriously injured and/or equipment could be damaged. Follow these guidelines to prevent a rack from toppling over:
Install all equipment in the lowest available position in the rack.
Use optional seismic tiedowns where appropriate.
Always site the unit on a level surface.
This section describes how to install a rack that already has your system IRUs rackmounted and cabled together. The following information is provided:
After you have completed installing your rack, proceed to “Cabling the System IRUs to a Power Source” to continue your installation.
If your system components were not shipped in a rack, skip this section and proceed to “Unpacking and Inspecting Modules” to begin your installation.
Perform the following preinstallation activities:
Perform site verifications (see “Site Plan Verification ”)
Gather appropriate tools to complete the installation (see “Tools Required”)
Ensure that the correct power receptacle is installed and properly wired (see “Power Receptacle Verification ”)
Note: You can perform the preinstallation activities days or weeks before you receive your system.
Ensure that all site requirements are met before your system arrives. If you have questions about the site requirements or you would like to order full-size floor templates for your site, contact a site planning representative by e-mail (site@sgi.com).
Table 1-1 lists the tools that you need to complete the installation.
Tool | Part Number | Purpose |
|---|---|---|
13-mm wrench | 7260744 | Adjust the leveling pads. |
13-mm socket (3/8-in. drive) | 7260726 | Remove bracket bolts from tall rack shipping crate. |
19-mm socket (3/8-in. drive) | 9470618 | Remove bolts from short rack shipping crate. |
Extension, 6-in. (3/8-in. drive) | 7260655 | Used with ratchet and sockets. |
Ratchet, reversible (3/8-in. drive) | 7260755 | Used with extension and sockets. |
Level, 9-in. | 9470556 | Level the rack. |
Ensure that a qualified technician installs the correct power receptacles. Your Altix 450 system uses one or two single-phase power receptacles. For North American sites, the single-phase receptacle is a 30-amp, 200- to 240-volt receptacle that has two phase sockets and one ground socket. For international sites, the single-phase receptacle is a 32-amp, 200-volt receptacle that has one phase socket, one neutral socket, and one ground socket. Note that the ground pin is slightly longer than the other two pins on the North American plug.
Optional three-phase power distribution is available in systems mounted in 42U (tall) racks.
For North American sites, follow these steps to ensure that a single-phase power receptacle is properly wired:
Set the voltmeter to a high AC voltage range.
Check the voltage between socket X and socket Y (see Figure 1-1). The meter should read between 200 and 240 VAC.
Check the voltage between socket X and the ground socket. The meter should read approximately 120 VAC.
Check the voltage between socket Y and the ground socket. The meter should read approximately 120 VAC.
Check the voltage between the ground socket and an earth-ground location. The meter should read 0 VAC.
Change the voltmeter to a low-resistance setting.
Measure between the ground socket and an appropriate earth-ground location and ensure that resistance is less than 1 ohm.
Repeat steps 1 through 7 for any additional single-phase power receptacles.
Caution: If a voltage reading is incorrect, or if the resistance measured in step 7 is more than 1 ohm, contact a site-approved electrician. Do not proceed with the installation.
For international sites, follow these steps to ensure that a single-phase power receptacle is properly wired:
Set the voltmeter to a high AC voltage range.
Check the voltage between socket 1 and socket 2 (see Figure 1-2). The meter should read between 200 and 240 VAC.
Check the voltage between socket 1 (line) and the ground socket. The meter should read between 200 and 240 VAC.
Note: The ground pin is slightly larger in diameter than the other two pins. Check the voltage between socket 2 (neutral) and the ground socket. The meter should read approximately 0 VAC.
Check the voltage between the ground socket and an earth-ground location. The meter should read 0 VAC.
Change the voltmeter to a low-resistance setting.
Measure between the ground socket and an appropriate earth-ground location and ensure that resistance is less than 1 ohm.
Repeat steps 1 through 7 for any additional single-phase power receptacles.
Caution: If a voltage reading is incorrect, or if the resistance measured in step 7 is more than 1 ohm, contact a site-approved electrician. Do not proceed with the installation.
Your Altix 450 system arrives at the site in a pallet-mounted cardboard shipping crate.
For a short rack system, the documentation carton and the accessories carton are packed with the system. The documentation carton contains the system manuals as well as warranty and licensing information. The accessories carton contains the I/O, peripheral, and system cables, and any additional connectors or tools that are required for a specific configuration. Optional storage or monitors are shipped in a separate carton.
For a tall rack system, the system documentation; accessories; and other optional hardware arrive in separate cartons.
If you have purchased optional installation support from SGI service skip the following sections and go on to the next chapter.
This section describes how to unload and transport the rack system to its designated location, as follows:
If your loading dock is the same height as the transportation vehicle, use a pallet jack to unload the system from the transportation vehicle. The pallet jack should have 48-in. tines or forks. Follow any instructions that are printed on the packing crates.
If the loading dock is not the same height as the vehicle, you must provide a forklift or another approved method to unload the system. You can use a platform or ramp to obtain the desired level as long as the ramp incline does not exceed a ratio of one unit vertical to six units horizontal. For more information on site requirements, contact SGI site planning by e-mail (site@sgi.com).
| Warning: Use two or more people to prevent computer equipment from rolling off the transportation vehicle. Failure to do so could result in serious damage to the computer equipment. |
If your site does not have a loading dock, arrange for a forklift to unload the system from the transportation vehicle. Ensure that two or three people are available to help unload the equipment. Move all crates slowly and carefully.
Figure 1-3 shows the lift openings and dimensions of a tall rack shipping crate. This figure also shows where to position the pallet jack.
Figure 1-4 shows the lift openings and dimensions of a short rack shipping crate. This figure also shows where to position the pallet jack.
After the system is unloaded from the truck, follow these steps before you unpack it:
Ensure that the crates and cartons arrive unopened.
Inspect the shipping crate for signs of external damage such as dents, holes, crushed corners, and water marks.
Ensure that the tilt watch has not been tripped.
If the crate is damaged, file a damage claim with the carrier immediately. In addition, notify your local Customer Support Center (CSC) for any missing, incorrect, or damaged items. For CSC contact information, see http://www.sgi.com/support/supportcenters.html.
Use a pallet jack with forks that are 48 in. (122 cm) long or longer to transport the shipping crate to the designated location. See Figure 1-3 and Figure 1-4 for the crate dimensions and location to position the pallet jack.
If the crate does not fit through all access doors, you may need to partially disassemble the crate.
| Caution: If the system shipping or storage environment is significantly colder than the environment in which it will be installed [40 ºF (22 ºC) or greater disparity], leave the rack in its shipping crate for at least 24 hours at room temperature before you start the installation. This acclimation prevents damage to the equipment that could result from thermal shock and condensation. |
| Caution: Do not subject the rack to any unnecessary shocks or vibration while you unpack and install the system. |
See Figure 1-5 as you follow these steps; the numbered illustrations correspond to the numbered steps.
Ensure that the temperature of the rack is acclimated to the environment in which you are installing it and move the crate to the installation location.
Remove all external banding and lift the crate's ramp away from the unit.
Remove the cardboard carton top and packing/insulation materials.
Prepare to move the rack off the crate using the following steps:
Remove the two bolts that hold the pallet's rear retention bracket in place.
Remove the two bolts that hold the rear “gate” of the pallet in place.
Remove the two bolts that hold the pallet's front retention bracket in place.
Align the holes in the edge of the ramp with the holes at the rear of the crate and secure the ramp in place using the two bolts removed from the pallet's rear gate.
Using two people, carefully pull the rack off the crate and roll it down the ramp.
Warning: The maximum weight of the short rack is 750 lbs (340 kg). Use caution when you roll the rack down the ramp.
To unpack a tall rack, you will need the following tools:
Extension, 6-inch (15.3 cm), 3/8-in. (13mm) drive
13-mm standard 3/8-in. drive socket
Ratchet, reversible, 3/8-in. (13mm) drive
See Figure 1-6 as you follow these steps; the numbered illustrations correspond to the numbered steps. Ensure that the temperature of the rack is acclimated to the installation environment and that the system crate is stable, and in an upright position.
Use a sharp cutting tool to remove the bands that secure the cardboard crate, then remove the outer packing materials.
Remove the cover bag and bungee cushion from the rack.
Locate and remove the 8 bolts that secure the wooden frame pieces to the base.
The rack's front and rear doors must be removed before you can remove the rack's shipping runners.
Remove and discard the foam plugs from either end of the rack's base. At this time you will need to place a pallet jack under the rack and lift it until the shipping runners are clear of the floor.
Undo and remove the two bolts on the shipping runners at either end of the rack and set the runners aside.
Use the pallet jack to lower the rack to the floor and use at least two people to roll the rack to the installation site.
Warning: Personal injury and system damage could result if the rack becomes unbalanced or gains too much momentum when rolled.
Reattach the doors to the front and rear before you move the rack to its designated location (see Figure 1-7).
| Caution: To avoid ESD damage to the electronic components, be sure to position the racks before you remove the ESD bags that cover the rack assemblies. |
To position and level your system racks, follow these steps:
Grasp the rear of each rack and roll the rack to its designated location.
Remove the ESD bags.
Adjust the leveling bolts of a rack, as shown in Figure 1-8, until the rack is level.
If you are installing additional racks, repeat until all of the racks are level.
Ensure that the circuit breakers on the power distribution units are in the OFF (O) position. Then connect the power cords to grounded power outlets. Plugging in the power cords grounds the racks.
It is recommended you secure all racks with optional seismic tie-downs if you are installing the system in an earthquake zone.
Note: Tall and short racks have four threaded holes that are located at the bottom of the rack (see Figure 1-9). Use these holes to secure the seismic tie-downs. Note that SGI does not supply the seismic tie-downs.
This section describes how to unpack and inspect individual IRUs. Follow these instructions if you plan to install individual modules in a rack or on a table top.
Before unpacking your IRUs, inspect the packaging container for evidence of mishandling during transit. If the packaging container is damaged, photograph it for reference. After you remove the contents, keep the damaged container and the packing materials.
Remove the IRU(s) from the packaging container and ensure that all accessories are included. Inspect the IRU(s) and accessories for damage. If the contents appear damaged, file a damage claim with the carrier immediately. In addition, notify your local SGI Customer Support Center (CSC) for any missing, incorrect, or damaged items. For CSC contact information, see http://www.sgi.com/support/supportcenters.html.
| Note: When using the IRU as a stand-alone unit (set on a desk or table top) you must secure the IRU and its fan module together with connection plates. IRUs mounted in a rack are held in place by the screws at the front and rear of the unit. |
Firmly connect the base module of the IRU to the fan module using these steps:
Align the rear connectors of the fan module with the rear of the IRU base module and carefully slide it in until it fully joins together.
Align the right side joining plate screw holes with the eight holes in the two adjacent modules. See Figure 1-10 for an example.
Insert and tighten the eight retention screws that hold the connection plate in place.
Repeat the process for mounting the joining plate on the left side of the IRU.
This section describes how to install the IRUs that compose an Altix 450 system in a rack. This section also describes how to remove the IRUs from a rack. You can use the instructions to rackmount one or more IRUs in a 20U (short) or 42U (tall) Altix rack.
| Caution: Always use at least two people when moving, installing, or removing a rackmounted Altix 450 IRU. |
This rackmounting information is found in the following sections:
Table 1-2 specifies the space requirements when rackmounting an IRU in a 19-inch rack.
Table 1-2. IRU Space Requirements
Height | (5U) 8.68 inches (22 cm) |
Width | 17.5 inches (44.45 cm) |
Depth | 32.5 inches (82.5 cm) with blower attached |
Weight | ~130 lb (59 kg) max config[a] |
Required front clearance for IRU | 8.25 in. (20.96 cm) |
Required rear clearance for IRU | 10 in. (25.40 cm) |
Required side clearance for IRU | No clearance requirement |
Required front clearance for rack | 48 in. (122 cm) |
Required rear clearance for rack | 48 in. (122 cm) |
[a] Weight will vary slightly depending on the number of blades installed and the amount of DIMMs installed, and on whether you have one or two disk drives in the IRU. | |
The base IRU, and any additional IRUs, each require five units (5U) of vertical space within the rack (one unit is equivalent to 1.75 inches [44.5 mm]). To determine where you should install the unit's shelf rails in the rack, you must count mounting holes. Each U contains three mounting holes; therefore, in the 5U of space that the module occupies, there are 15 mounting holes. The bottom hole of the 5U space is hole 1. The top mounting hole in the 5U space is hole 15. See Figure 1-11.
| Note: An IRU in the rack is identified by the lowest U number that it occupies. For example, in Figure 1-11 the IRU's bottom is in U1 (the first unit within the rack). |
To determine how many mounting holes you must count, use the following formula: 3 x (the lowest U number that the module will occupy) - 2. For example, when you want to install the module in locations U6 through U11, count 16 mounting holes (3 x 6 - 2) starting from the bottom of the rack. The 16th hole is the first mounting hole of U6.
This section describes how to rackmount an IRU using shelf rails. The shelf rails, which are shipped with the module, support the module within the rack. To attach the shelf rails to the rack, follow these steps:
Locate the slot location in the rack in which you will install the IRU. See “Determining Where to Attach Rails in a Rack” if you are uncertain.
In the slot location from step 1, position the left shelf rail at a 90-degree angle to the front and rear rack rails (see Figure 1-12).
Insert the top-front bracket tab into one of the narrow slots in the front rack rail.
Insert the top-rear bracket tab into the narrow slot in the rear rack rail.
Note: Verify that the tabs are the same height to ensure that the shelf is level in the rack. Lower the bottom of the shelf rail until its two lower tabs engage with the wide slots in the front and rear rack rails. The shelf rail is held in by gravity and the tabs.
Repeat these steps for the right shelf rail.
Note: Even with the blades, power supplies and fan module disconnected, the IRU's base unit is heavy. Always use two people when installing it into a rack. Working from the front of the rack, set the rear edge of the IRU module on the shelf rails. Then slide the module into the rack until the module ears are snug against the front rack rails. See Figure 1-13.
Fasten the module to the front rails of the rack with the screws provided. See Figure 1-13.
Working from the rear of the rack, align the rear connectors of the fan module with the rear of the IRU base module and carefully slide it in until it fully connects together.
Fasten the fan module to the rear rails of the rack with the screws provided.
To remove an IRU that is already mounted in a rack, follow these steps:
Power off the module. For instructions on how to power off the module, see “Powering the System On and Off”.
Disconnect all of the cables at the front of the module.
Removing the system blades and power supplies from the IRU is recommended to decrease the overall weight of the unit. Be sure to place any system blades in a static-free area.
Warning: Components may be hot. To avoid injury, allow the components to cool for approximately five minutes before you proceed with these instructions. Remove the screws that secure the module to the front rails of the rack.
Remove the screws that secure the IRU at the rear of the rack.
Caution: Always use at least two people when installing or removing a rackmounted Altix 450 IRU. Use a minimum of two people to slide the unit out the front of the rack. Both lifters need to place one hand securely under the IRU as it slides out to support the weight of the unit as it clears the rack.
Place the IRU base module on a flat, stable surface.
Remove the IRU's fan module from the rear of the rack and place it nearby.
Some configurations of an Altix 450 system will consist of either two or more IRUs. This section describes how to cable together these multiple units. If your system was shipped with all the cables pre-installed, go on to the next section.
| Note: If your system is made up of a single module, you can skip this section and proceed to “Cabling the System IRUs to a Power Source” for instructions to connect your system to power. |
The primary IRU module (housing the system disk), connects to additional Altix 450 IRUs via the module's front NUMAlink connectors. Figure 1-14 shows an example.
| Note: Before you connect two Altix 450 IRUs to each other, you must assign unique system ID numbers to the compute modules, as follows: |
Designate one of the IRU modules as the master server and the other IRU chassis as the slave.
Connect a console to the master IRU (see “Connecting the System Console”), and then power on the IRU (see “Powering the System On and Off”).
Use the <slotnumber> L1 command to set the secondary IRU's ID number to a higher number than the primary IRU's ID number. For example, if the master IRU unit's L1 prompt indicates that its ID number is 01 (001c01-L1>), then the subsidiary IRU ID number should be 02 or higher (001c02-L1>).
001c01-L1>brick slot 02 brick slot set to 02.
See the SGI L1 and L2 Controller Software User's Guide (007-3938-00x) for more information on L1 commands.
To connect two Altix 450 compute modules to each other with NUMAlink cables, follow these steps:
Power off both compute modules (see “Powering the System On and Off”).
Connect the NUMAlink cables to the NUMAlink connectors on both IRU modules.
Connect a system console to the master IRU (the one with the system disk), as described in “Connecting the System Console”.
Power on both IRUs as described in “Powering the System On and Off”.
The console output should indicate that the processors and memory on both IRU modules have been discovered. If the secondary IRU module has not been discovered, use the reset L1 command to perform a reset of the system.
| Note: Use the network L1 command to set the network mode. (See the SGI L1 and L2 Controller Software User's Guide (007-3938-00x) for more information on L1 commands.) |
This section describes how to make the following connections to a power source:
If you are operating your system on a table top, connect the IRU(s) to an approved electric receptacle. See Figure 1-15 for the location of the IRU's power connectors.
Figure 1-16 shows the connecting of a dual-IRU system located on either a tabletop or desktop, to a power source.
If your Altix 450 system is shipped from SGI in a rack, there will be at least one power distribution unit (PDU) installed in the rack. Note that each single-phase PDU can support a maximum of two Altix 450 IRUs. Plug both power cords from each IRU into the PDU(s) installed in your short or tall rack.
Figure 1-17 shows an example of cabling the system modules that reside in a rack to a PDU.
An optional three-phase PDU (used in 42U system racks only) has 18 outlet connections, of which up to 16 may be needed to power eight IRUs. Each three-phase rack system houses a single PDU.
Figure 1-18 shows an example of the optional three-phase PDU available in tall racks only.
This section explains how to attach and establish a connection between a system console and an Altix 450 system. The system console enables you to perform the following activities:
Start a Linux console session to set up networking and other configuration parameters.
Monitor your system by reading the status and error message information that the L1 controller generates.
Enter L1 controller commands to monitor or change particular system functions. You can, for example, monitor the speed of fans for a particular module. See the SGI L1 and L2 Controller Software User's Guide (007-3938-00x) for descriptions of the L1 controller commands that you can use.
Power-on or power-off your system.
To attach a PC to your server system, connect a null modem serial cable between the PC and the Console port of the IRU (see Figure 1-19). To establish a connection between your system and the system console (PC), follow these steps:
Ensure that the L1 controller of the base compute module is powered on. When the base compute module is connected to a power source, the L1 controller should be powered on.
Note: When powered on, the L1 controller displays L1 running. If it does not display L1 running, check the connection between the base compute module and the power source. In addition, ensure that the circuit breaker of the power source is on. Power on the system console.
Ensure that the system console has the following network settings:
Baud 38400
No parity
8 data bits
1 stop bit
Hardware flow control on (RTS/CTS)
Type cu -l ttys0 -S38400 for a Linux based console, and then press Enter to display the L1 prompt. If the console uses another operating system, start a terminal emulation program as instructed in the console's user documentation.
This section describes how to operate your Altix 450 system, as follows:
This section describes how to power on and power off your system (or an individual IRU) at a system console, or manually, as follows:
To prepare to power on your system, follow these steps:
Confirm that all the cable connections between the IRUs and other system items are connected securely. If necessary, see ??? for information.
Confirm that all the power cables are plugged in securely to a power source. If necessary, see “Cabling the System IRUs to a Power Source” for information.
Note: You must manually power on any optional storage modules by placing the power switch(es) in the ON (I) position. Note that you should turn any optional storage module on before starting the operating system.
To power on and boot your system using the system console, follow these steps:
If not yet done so, connect a system console to the server system as described in “Connecting the System Console”.
If the monitors and other peripherals are equipped with voltage select switches, verify that they are set for the appropriate AC voltage and plug them in. Note that they are normally plugged into sources outside the rack system.
Turn on the on/off circuit breaker switchs of the PDU as shown in Figure 1-20.
Verify that all of the L1 controllers display “L1 running.” If any L1 controllers are not running, contact your SGI system support engineer (SSE).
At the system console, access the L2 controller by entering the following command:
$> /stand/sysco/bin/12term
From the L2 prompt, display the system configuration by entering the following command:
L2> cfg
This command lists the IRUs that the L2 controller detects in the system and their system controller addresses. If a IRU that you want to power on does not appear in the list, it will not power on. Ensure that the IRU's L1 controller is running and that the IRU is cabled properly.
From the L2 prompt (L2>), power on an individual IRU by entering the following command. (If you want to power on the entire system, proceed to Step 8.)
L2> r <rack#> s <slot#> pwr u
For example, to power on a IRU in rack 1, slot 18, enter the following command:
L2> r 1 s 18 pwr u
The slot number is the unit number of the IRU within the rack.
If you want to power on two selected IRUs of a rack at the same time, you must enter the rack number followed by the slot numbers of the IRUs that you want to power on. For example, to power on the IRUs in slots 16 and 21, enter the following command:
L2> r 1 s 16,21 pwr u
If you want to power on the entire system, enter the following command:
L2> pwr u
(The default setting for the pwr u command is all racks and slots.)
When the L2 prompt appears, you will not see the output that is produced during the power-on procedure unless you redirect the keyboard input from the L2 controller to the normal console by typing control d.
L2> ctrl d
If your system does not have a a local system console, you can manually power on and off the server by using the power button(s).
To power on your system or an individual IRU manually, follow these steps:
If the monitors and other peripherals are equipped with voltage select switches, verify that they are set for the appropriate AC voltage and plug them in. Note that they are normally plugged into power sources outside the rack system.
Turn the circuit breaker switchs of the PDU to the on position, see Figure 1-20.
Press the power buttons (see Figure 1-21) on each of the IRUs that you want to power on. Note that any optional storage modules should be powered up first.
To boot the system from the L1 interface you must have a console connected to the system via the console port. Use the following commands depending on system type:
For a system that contains one IRU, enter the following command at the L1 prompt to power on the server:
001c01-L1> power upFor a system with multiple IRUs, enter the following command at the L1 prompt:
001c01-L1> * power up
To power off your system using the system console, follow these steps:
| Caution: If you power off the system before you halt the operating system, you can lose data. |
Shut down the operating system by entering the following command:
# init 0
To access the L2 prompt, direct the keyboard input to the L2 controller by entering Ctrl+T.
$> ctrl t
From the L2 prompt (L2>), power off an individual IRU by entering the following command. (If you want to power off the entire system, proceed to Step 4.)
L2> r <rack#> s <slot#> pwr d
For example, to power off the IRU in rack 1, slot 16, enter the following command:
L2> r 1 s 16 pwr d
The slot number is the unit number of the IRU within the rack.
If you want to power off more than one IRU in the rack at the same time, enter the rack number followed by the slot numbers of the IRUs that you want to power off. For example, to power off the IRUs in slots 16 and 21, enter the following command:
L2> r 1 s 16,21 pwr d
If you want to power off all of the IRUs within the rack, enter the following command:
L2> pwr d (The default setting for the pwr d command is all racks and slots.)
“Powered Down” appears on the L1 display when the IRU is powered off. The L1 controller is still powered on.
To completely power down an L1 controller, unplug the IRU's power cords from the PDU or two front power supplies.
To power off your system manually, follow these steps:
| Caution: If you power off the system before you halt the operating system, you can lose data. |
Shut down the operating system by entering the following command:
# init 0
Press the power buttons or power switches on each of the IRUs that you want to power off. You may power off the IRUs in any order:
To power off the optional storage units, press the power button(s) on its rear panel to the OFF (O) position.
To power off the IRUs, press the power button with the LED on the front panel of each unit (see Figure 1-21).
The L1 front panel of the Altix 450 IRU provides the following control features, as shown in Figure 1-22:
Status LEDs. The front panel has the following LEDs:
Power button LED. This LED illuminates green when the internal components are on.
Service-required LED. This LED illuminates yellow to indicate that an item is not functioning properly (for example, a fan is off), but the IRU is operating.
Failure LED. This LED illuminates red to indicate that a failure has occurred and the module is down.
Power button. Normally you power on the system from the system console. Alternatively, you can press this button to power on the module.
Reset button. Actuate this button to reset the internal processors and ASICs. The reset will cause a memory loss. (To perform a reset without losing memory, see the NMI button information that follows.)
NMI button. Actuate the NMI (non-maskable interrupt) button to reset the internal processor(s) and ASICs, and write register data and memory to the /var/adm/crash file.
Use a paperclip or other small object to access the “pin-hole” actuators on the front panel.
| Note: If your system includes an optional storage module, see the user's guide that comes with the product for operating instructions. |
The L1 controller operates in one of the two following modes:
L1 mode. The L1 prompt (001c01-L1>) is visible and all input is directed to the L1 command processor.
Console mode from L1. Output from the system is visible and all input is directed to the system.
The L1 controller is ready to accept commands when you see a prompt of the following form:
001c01-L1>
See the SGI L1 and L2 Controller Software User's Guide (007-3938-00x) for a detailed list of L1 commands.
To enter console mode, press Ctrl+D at the L1 prompt, as follows:
001c01-L1> Ctrl+D entering console mode 001c01 console, <CTRL-T> to escape to L1 . <system output appears here> . |
To return to L1 mode, press Ctrl+T, as follows:
Ctrl+T escaping to L1 system controller 001c01-L1> |
At this point, you can enter any L1 command. When the command completes execution, the L1 returns to console mode:
re-entering console mode 001c01 console, <CTRL-T> to escape to L1 |
To permanently engage the L1 mode, press Ctrl+T and then enter the l1 command, as follows:
Ctrl+T escaping to L1 system controller 001c01-L1> l1 L1 command processor engaged, <CTRL-D> for console mode. 001c01-L1> |