Site Preparation Guide, Second Edition - HP Integrity cx2620 Server
Most computer room installations are equipped with the following fire protection devices:
• Smoke detectors
• Fire and temperature alarms
• Fire extinguishing system
Additional safety devices are:
• Circuit breakers
• An emergency power cutoff switch
• Devices specific to the geographic location for example, earthquake protection
Fire Suppression
Though fires in computer rooms are rare, they are a critical safety and business consideration.
HP recommends the use of gaseous agents as primary fire control, with water as a backup system.
Gaseous agents include CO
2
, and Halon substitutes, like Intergen. Where fire suppresssion using
water is dictated, HP recommends the use of 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
HP only recommends the use of third party cabinets whose product designs have been carefully
considered. Consider the following important cabinet 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 on the server is three feet (91.4cm).
The work space shall permit at least a 90° 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,
side, or 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. Refer to the safety and regulatory labels
24 General Site Preparation Guidelines