Site Preparation

Environmental Elements

At altitudes above 10,000 feet (3048 m), the lower air density reduces the cooling capability of air conditioning systems. If your facility is located above this altitude, the recommended temperature ranges may need to be modified. For each 1000 feet (305 m) increase in altitude above 10,000 feet (up to a maximum of 15,000 feet), subtract 1.5° F (0.83° C) from the upper limit of the temperature range.

Air Conditioning System Guidelines

The following guidelines are recommended when designing an air conditioning system and selecting the necessary equipment:

•The air conditioning system that serves the computer room should be capable of operating 24 hours a day, 365 days a year. It should also be independent of other systems in the building.

•Consider the long-term value of computer system availability, redundant air conditioning equipment or capacity.

•The system should be capable of handling any future computer system expansion.

•Air conditioning equipment air filters should have a minimum rating of 45% (based on “AShRA Standard 52-76, Dust Spot Efficiency Test”).

•Introduce only enough outside air into the system to meet building code requirements (for human occupancy) and to maintain a positive air pressure in the computer room.

Air Conditioning System Types

The following three air conditioning system types are listed in order of preference:

•Complete self-contained package unit(s) with remote condenser(s)—These systems are available with up or down discharge and are usually located in the computer room.

•Chilled water package unit with remote chilled water plant—These systems are available with up or down discharge and are usually located in the computer room.

•Central station air handling units with remote refrigeration equipment—These systems are usually located outside the computer room

•Scalable overhead distribution system—This system distributes water overhead to air heat exchangers, which cool the air locally over the servers. This system called DataCoolTM is primarily used in high density environments of 100 to 500 watts per square foot.

Basic Air Distribution Systems

A basic air distribution system includes supply air and return air.

An air distribution system should be zoned to deliver an adequate amount of supply air to the cooling air intake vents of the computer system equipment cabinets. Supply air temperature should be maintained within the following parameters:

•Ceiling supply system—From 55° F (12.8° C) to 60° F (15.6° C)

•Floor supply system—At least 60° F (15.6° C)

If a ceiling plenum return air system or a ducted ceiling return air system is used, the return air grille(s) in the ceiling should be located directly above the computer equipment cabinets.

The following three types of air distribution system are listed in order of recommendation:

Appendix C

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HP RP7405/7410 manual Air Conditioning System Guidelines, Air Conditioning System Types, Basic Air Distribution Systems
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RP7405/7410 specifications

The HP RP7405 and RP7410 are high-performance servers in the HP Integrity line, specifically designed for mission-critical applications. These servers are built on the Itanium architecture and showcase HP's commitment to reliability, scalability, and performance. Targeted primarily at the enterprise market, both models are ideal for data-intensive workloads, virtualization, and large databases.

One of the standout features of the RP7405 and RP7410 is their robust architecture. The servers utilize HP's NonStop technology, ensuring high availability and fault tolerance. This architecture is designed to provide continuous uptime, which is crucial for businesses dependent on uninterrupted access to their data and applications. The RP7405 supports up to 4 processors, while the RP7410 can accommodate up to 8 processors, allowing for enhanced compute power and the ability to handle increasingly demanding workloads.

In terms of memory, the RP7405 and RP7410 support significant RAM configurations, making them capable of handling large memory-intensive applications. They are equipped with advanced memory management technology, including ECC (Error-Correcting Code) memory, which helps to detect and correct data corruption, thereby enhancing system reliability.

The servers employ HP's Virtual Partition (vPars) technology, which allows for efficient server consolidation by enabling multiple virtual servers to operate on a single physical machine. This capability enhances resource utilization and simplifies management, thus reducing IT costs while maximizing performance.

HP's Serviceguard clustering software is integrated into both servers, offering enhanced availability through active-active clustering and failover capabilities. This software ensures that workloads can be seamlessly transitioned between servers in the event of hardware failures or maintenance, further minimizing downtime.

Security is also a paramount consideration with the HP RP7405 and RP7410. The servers come equipped with advanced security features, including secure boot, encryption, and an array of compliance certifications, ensuring that sensitive data is protected against unauthorized access.

Additionally, the servers support a wide range of operating systems, including HP-UX, which is optimized for the Itanium architecture. This flexibility allows organizations to choose the operating environment that best suits their application needs.

In conclusion, the HP RP7405 and RP7410 are powerful servers designed for high-performance applications in enterprise environments. With their advanced architecture, extensive memory support, virtualization capabilities, and robust security features, these servers stand out as reliable solutions for organizations seeking to enhance their IT infrastructure while ensuring high availability and performance.
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