It is recommended least one of the SSEs have a strong background in HIPPI installation, configuration, and network administration. This helps to assure an efficient and timely installation.

It is also recommended that two SSEs perform the installation. More than two can be involved in the bring-up process. However, the following situations may occur:

The following steps are suggested as a guide for the installation planning process:

Once you have developed an installation plan, set up the array site, and received, uncrated, and positioned the hardware components in their approximate locations, the actual installation (cabling, booting, software installation, configuration, and testing) takes 12 or more hours to complete.

To determine the minimum space requirements for a chassis, add the chassis dimensions shown in Figure 2-1 and the appropriate clearances shown in Table 2-2.

Figure 2-1. Deskside Chassis Dimensions

The different clearances are based on the airflow requirements of the chassis. If the top of the chassis is unobstructed, less clearance is required on the sides and back. If the top of the chassis is obstructed, however, the sides and back of the chassis must compensate for the smaller air exhaust path. Figure 2-2 shows the airflow path of the chassis.

Figure 2-2. Deskside Chassis Airflow

Additional space is required to service the chassis, such as connecting or disconnecting cables and changing internal drives, boards, and other components. Be sure to allow sufficient space either in front of or behind the chassis to facilitate future installation, service, and cabling activities. The chassis includes wheels for easier front-to-back movement. See Figure 2-3 for the wheel locations. You can fix the wheels in place by using the chassis levelers or by using a wheel chock (Silicon Graphics part number 040-0220-001).

Figure 2-3. Deskside Wheel Locations (Bottom View)

Provide a location for a rackmount chassis, with clearance for the front and rear cabinet doors in their fully opened positions. The chassis requires minimal side clearances because most of the airflow and servicing is through the front, rear, and top of the chassis. Side access is required to:

For activities requiring side access, determine if the chassis can be rolled forward or backward to provide adequate side clearance. If an installation is semipermanent, such as at sites with chassis bolted directly to the floor to prevent movement, allow a total width of 96 inches (244 cm). Use the dimensions shown in Figure 2-4 for rackmount chassis clearance.

Figure 2-4. Rackmount Chassis Clearance

Position the chassis so that it receives proper air circulation. See Figure 2-5 for the airflow through the chassis. An ideal location provides cool air near the chassis air intake vents and warm air removal near the chassis air outlets. Air temperature should not fluctuate dramatically, and the air should circulate freely.

Figure 2-5. Rackmount Chassis Airflow

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Note: Keep the top of the chassis clear of any obstruction. The top of the chassis is the primary air venting surface and is not structurally designed to hold weight.

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Compare the floor-load rating of the site with the values listed in Table 2-4. Some site floor-load ratings are as low as 100 lb/ft² To ensure that the flooring is adequate for all future chassis upgrades, you must make sure the floor-load rating meets 133 lb/ft².

For installations on raised floors, check that the construction will properly support the distribution of the weight. The rackmount chassis uses four casters and four stabilizing levelers that distribute the weight load to the site floor. See Figure 2-6 for the caster and leveler locations. If a floor is modified, such as by cutting new access panels in computer floor tiles, determine if additional reinforcement is required.

Figure 2-6. Rackmount Caster and Leveler Locations

This section defines the space required for the following array configurations:

Two-Node Configuration (No HIPPI Switch)

Figure 2-10 shows the space requirements for a two-node configuration without the Multi-Port HIPPI switch. This figure shows the maximum spatial configuration using rackmount systems. To determine spatial requirements for a deskside system, see Section 2.5.1.

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Note: With this two-node configuration, you need to add a HIPPI switch before you can upgrade to a larger array setup.

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Figure 2-10. Space Requirements for Two-Node Array (No HIPPI Switch)

Two-Node Configuration (with HIPPI Switch)

Figure 2-11 shows the space requirement for a two-node configuration with a HIPPI switch. This figure shows the maximum spatial configuration using rackmount systems. To determine spatial requirements for a deskside system, see Section 2.5.1.

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Note: With this two-node configuration, you can directly upgrade to a four- or eight-node setup by adding systems and array software.

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Figure 2-11. Two-Node Array Configuration (With HIPPI Switch)

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Note: Be sure to add the IRISconsole station space requirements to your final calculations. Figure 2-11 does not include a table/desk measurements for the IRISconsole.

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Four-Node Configuration

Figure 2-12 shows the space requirements for a four-node configuration. This figure shows the maximum spatial configuration using rackmount systems. To determine spatial requirements for a deskside system, see Section 2.5.1.

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Note: The four-node array requires a HIPPI switch for operation.

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Figure 2-12. Four-Node Array Space Requirements

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Note: Be sure to add the IRISconsole space requirements to your final calculations. Figure 2-12 does not include table/desk measurements for the IRISconsole.

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Eight-Node Configuration

Figure 2-13 shows the space requirements for an eight-node configuration. This figure shows the maximum spatial configuration using rackmount systems. To determine spatial requirements for a deskside system, see Section 2.5.1.

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Note: The eight-node array requires a HIPPI switch for operation.

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Figure 2-13. Eight-Node Array Space Requirements

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Note: Be sure to add the IRISconsole station space requirements to your final calculations. Figure 2-13 does not include table/desk measurements for the IRISconsole.

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Use Table 2-9 to determine the tools required for each listed activity.

Assistance is required to receive a shipment, uncrate a chassis, and move a chassis. The rackmount chassis requires assistance to unbolt and remove the crate's front panel and to remove the chassis from the crate. It also requires assistance to move any distance.

Always use assistance when moving equipment up or down ramps. For rackmount systems, use a minimum of three individuals. On fully configured systems, up to five people may be required to safely move the chassis. Avoid ramps that exceed a 20° angle.

Walk through the proposed route for moving a system to its destination. Pay particular attention to corners, ramps, restricted doorways, low ceilings, and fixed obstructions. Table 2-10 shows the shipping dimensions of the main containers.

For installations above or below ground floor, check that the system is within the size and weight limits of elevators or similar cargo machinery. If freight blankets are available, use them on elevator sides. Use straps to keep the chassis from shifting while being moved in an elevator.

For uncrated deskside chassis, the wheels work well on smooth surfaces but are not designed for carpeting and rough flooring.

Each site must provide proper air temperature, humidity, and filtration. Use Table 2-11 through Table 2-17 to prepare the site air conditioning.

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Note: Temperature ranges apply to systems inside a building and out of direct sunlight. For installations at or above 8,000 feet, the system fans must be set on high-speed during operation.

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^aMSL indicates mean (average) sea level or 29.92" (76 cm) of mercury barometric pressure.

^aMSL indicates mean (average) sea level or 29.92" (76 cm) of mercury barometric pressure.

^aMSL indicates mean (average) sea level or 29.92" (76 cm) of mercury barometric pressure.

Table 2-16 and Table 2-17 provide heat dissipation specifications for a rackmount and deskside array.

The CHALLENGE/Onyx product line is designed for the typical office and computing environment, requiring no special modifications or protection. If a system is installed at an industrial site, check that vibrations are kept within the limits shown in Table 2-18.

Check that the additional computer equipment acoustics (noise-emission levels) are within the limits for the particular site (see Table 2-19).

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Note: Check local codes to ensure that the site is compliant with worker safety regulations, such as those provided by UL, TUV, and CSA.

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The systems are designed for computer rooms. The measurements in this section are only guidelines because acoustics depend on many factors outside the control of the manufacturer. Room characteristics such as carpeting and wall coverings affect the noise levels at an installation.

If a site exceeds desirable noise levels: