HP Superdome SX2000 Generic Site Preparation Guide, Fourth Edition - Page 10

Fire Suppression, Lighting Requirements for Equipment Servicing, Cabinet Recommendations

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Fire Suppression Though fires in computer rooms are rare, they are a safety and business consideration. Use gaseous agents as primary fire control with water as a backup system. Gaseous agents include CO2 and Halon substitutes, like Intergen. Where fire suppression using water is dictated, use dry pipe water valving with suitably rated temperature heads. Dry pipe water valving lowers the business risks associated with accidental water pipe discharge. Lighting Requirements for Equipment Servicing Adequate lighting and utility outlets in a computer room reduce the possibility of accidents during equipment servicing. Safer servicing is also more efficient and, therefore, less costly. For example, adequate lighting reduces the chances of connector damage when cables are installed or removed. The minimum recommended illumination level is 70 foot-candles (756 lumens per square meter) when the light level is measured at 30 inches (76.2 cm) above the floor. Cabinet Recommendations Use third party cabinets whose product designs have been carefully considered with the following attributes: • Strength • Airflow considerations • Cabling restrictions Seismic or earthquake resistance can also be an important attribute in certain parts of the world. Working Space for Server Access The recommended working space for performing maintenance is 3 feet (0.9144 m) from either side of, in front of, or behind the server. The work space must permit at least a 90-degree opening of equipment doors or hinged panels. When planning for the working-space area, consider whether access to the server will be at the front, the side, or the rear of the server. Power Consumption Power consumption can be divided into two broad categories: • Marked electrical amperage, which is listed on the required safety and regulatory labels, generally represents a "worst case" scenario that the customer cannot measure. Use this amperage to size the electrical infrastructure. • Typical consumption, which is measured under normal circumstances, should be used only in customer calculations with UPS and air-conditioning sizing where remaining capacities are needed. In addition to the HP server hardware, you must consider any peripheral equipment that will be installed during initial installation or a later update. See the safety and regulatory labels on equipment or applicable product-specific documentation for such devices to determine the power required to support these devices. 10 General Site Preparation Guidelines

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Fire Suppression
Though fires in computer rooms are rare, they are a safety and business consideration. Use
gaseous agents as primary fire control with water as a backup system. Gaseous agents include
CO
2
and Halon substitutes, like Intergen. Where fire suppression using water is dictated, use
dry pipe water valving with suitably rated temperature heads. Dry pipe water valving lowers
the business risks associated with accidental water pipe discharge.
Lighting Requirements for Equipment Servicing
Adequate lighting and utility outlets in a computer room reduce the possibility of accidents
during equipment servicing. Safer servicing is also more efficient and, therefore, less costly. For
example, adequate lighting reduces the chances of connector damage when cables are installed
or removed.
The minimum recommended illumination level is 70 foot-candles (756 lumens per square meter)
when the light level is measured at 30 inches (76.2 cm) above the floor.
Cabinet Recommendations
Use third party cabinets whose product designs have been carefully considered with the following
attributes:
•
Strength
•
Airflow considerations
•
Cabling restrictions
Seismic or earthquake resistance can also be an important attribute in certain parts of the world.
Working Space for Server Access
The recommended working space for performing maintenance is 3 feet (0.9144 m) from either
side of, in front of, or behind the server. The work space must permit at least a 90-degree opening
of equipment doors or hinged panels. When planning for the working-space area, consider
whether access to the server will be at the front, the side, or the rear of the server.
Power Consumption
Power consumption can be divided into two broad categories:
•
Marked electrical amperage, which is listed on the required safety and regulatory labels,
generally represents a “worst case” scenario that the customer cannot measure. Use this
amperage to size the electrical infrastructure.
•
Typical consumption, which is measured under normal circumstances, should be used only
in customer calculations with UPS and air-conditioning sizing where remaining capacities
are needed.
In addition to the HP server hardware, you must consider any peripheral equipment that will
be installed during initial installation or a later update. See the safety and regulatory labels on
equipment or applicable product-specific documentation for such devices to determine the power
required to support these devices.
10
General Site Preparation Guidelines