Site Preparation Guide hp 9000 rp7420 Third Edition Manufacturing Part Number : A7025-96019 October 2006 Printed in the U.S.A. © Copyright 1979-2006 Hewlett-Packard Development Company, L.P.
Legal Notices © Copyright 2006 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. Revision History First Edition Initial release. December 2003.
Contents 1. System Specifications Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Breaker . .
Contents Site Preparation Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables Table 1-1. HP 9000 rp7420 Server Server Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . 2 Table 1-2. HP 9000 rp7420 Server Component Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Table 1-3. Power Cords. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Table 1-4. AC Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables vi
Figures Figure 1-1. Airflow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 2-1. Raised Floor Ground System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 2-2. Cabinet Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Figure 2-3. Footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figures viii
1 System Specifications This chapter describes the basic server configuration and its physical specifications and requirements.
System Specifications Dimensions and Weights Dimensions and Weights This section provides dimensions and weights of the system components. Table 1-1 HP 9000 rp7420 Server Server Dimensions and Weights Stand-alone Packaged Height 17.3 in / 43.9 cm 35.75 in / 90.8 cm Width 17.5 in / 44.4 cm 28.0 in / 71.1 cm Depth 30.0 in / 76.2 cm 28.38 in / 72.
System Specifications Electrical Specifications Electrical Specifications This section provides electrical specifications for HP 9000 rp7420 Server. Grounding The site building shall provide a safety ground for each AC service entrance to all cabinets. Install a protective earthing conductor that is identical in size, insulation material, and thickness to the branch-circuit supply conductors. The PE conductor must be green with yellow stripes.
System Specifications Electrical Specifications Table 1-4 AC Power Specifications Requirements Value Comments Nominal input voltage 200/208/220/230/240 (VAC rms) Frequency range (minimum – maximum) 50 – 60 (Hz) Number of phases 1 Maximum input current 12 amps Per line cord Maximum inrush current 30 A peak for 15 ms Per line cord Power factor correction >0.98 >0.95 At all loads of 50% –100% of supply rating At all loads 0f 25% – 50% of supply rating Ground leakage current (mA) <3.
System Specifications Environmental Specifications Environmental Specifications This section provides the environmental, power dissipation, noise emission, and airflow specifications for the HP 9000 rp7420 Server. Temperature and Humidity The cabinet is actively cooled using forced convection in a Class C1-modified environment. The recommended humidity for a Class C1 server is 40-55%.
System Specifications Environmental Specifications PCI/Mass Storage Section Cooling Six 92 mm fans located between the mass storage devices and the PCI card cage provide airflow through these devices. The PCI fans are powered with housekeeping power and run at full speed at all times. The air is pulled through the mass storage devices and pushed through the PCI card cage.
System Specifications Environmental Specifications Airflow The HP 9000 rp7420 Server requires that the cabinet air intake temperature be between 68° and 77° F (20° and 25° C) at 332 CFM. Figure 1-1 illustrates the location of the inlet and outlet airducts on a single cabinet.
System Specifications System Requirements Summary System Requirements Summary This section summarizes the requirements that must be considered in preparing the site for the HP 9000 rp7420 Server. Power Consumption and Air Conditioning To determine the power consumed and the air conditioning required, follow the guidelines in Table 1-5. NOTE When determining power requirements, consider any peripheral equipment that will be installed during initial installation or as a later update.
System Specifications System Requirements Summary Table 1-7 Weight Summary (Continued) Component Quantity Multiply By Disk Drive 1.6 lb / 0.73 kg Chassis with skins and front bezel cover 131 lb / 59.
System Specifications System Requirements Summary 10 Chapter 1
2 General Site Preparation Guidelines The following information provides general principles and practices to consider before the installation or operation of the system.
General Site Preparation Guidelines Electrical Factors Electrical Factors NOTE Electrical practices and suggestions in this guide are based on North American practices. For regions and areas outside North America, local electrical codes will take precedence over North American electrical codes. An example would be the recommendation that the Protective Earthing (PE) conductor be green with yellow stripes.
General Site Preparation Guidelines Electrical Factors Additional safety devices are: • Circuit breakers • An emergency power cutoff switch • Devices specific to the geographic location, such as earthquake protection 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.
General Site Preparation Guidelines Electrical Factors • Utility service low-voltage conditions (such as sags or brownouts) • Wide and rapid variations in input voltage levels • Wide and rapid variations in input power frequency • Electrical storms • Large inductive sources (such as motors and welders) • Faults in the distribution system wiring (such as loose connections) • Microwave, radar, radio, or cell phone transmissions Power System Protection The server can be protected from the sources
General Site Preparation Guidelines Electrical Factors • Liquidtight with RFI strain relief (most commonly used with raised floors) Building Distribution All building feeders and branch circuitry should be in rigid metallic conduit with proper connectors (to provide ground continuity). Conduit that is exposed and subject to damage should be constructed of rigid galvanized steel.
General Site Preparation Guidelines Electrical Factors Dual Power Source Grounding When dual power sources are utilized, strong consideration should be given to measure voltage potentials. The use of dual power might create an electrical potential that can be hazardous to personnel and might cause performance issues for the equipment. Dual power sources might originate from two different transformers or two different UPS devices.
General Site Preparation Guidelines Electrical Factors • Good—Use the raised floor structure as a signal reference grid. In this case, the floor must be designed as a ground grid with bolted stringers and corrosion resistive plating (to provide low resistance and attachment points for connection to service entrance ground and server equipment). The use of conductive floor tiles with this style of grid further enhances ground performance.
General Site Preparation Guidelines Electrical Factors System Installation Guidelines This section contains information about installation practices. Some common problems are highlighted. Both power cable and data communications cable installations are discussed. NOTE In domestic installations, the proper receptacles should be installed before the arrival of HP equipment. Refer to the appropriate installation guide for installation procedures.
General Site Preparation Guidelines Environmental Elements Environmental Elements The following environmental elements can affect server installation: • Computer room preparation • Cooling requirements • Humidity level • Air conditioning ducts • Dust and pollution control • Metallic particle contamination • ESD prevention • Acoustics (noise reduction) Computer Room Preparation The following guidelines are recommended when preparing a computer room for the server: • Locate the computer room
General Site Preparation Guidelines Environmental Elements • Reheating • Air distribution • System controls adequate to maintain the computer room within the operating range Lighting and personnel must also be included. For example, a person dissipates about 450 Btu/hr while performing a typical computer room task. At altitudes above 10,000 ft (3048 m), the lower air density reduces the cooling capability of air conditioning systems.
General Site Preparation Guidelines Environmental Elements If a ceiling plenum return air system or a ducted ceiling return air system is used, the return air grilles 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: • Underfloor air distribution system.
General Site Preparation Guidelines Environmental Elements Air Conditioning Ducts Use separate computer room air conditioning duct work. If it is not separate from the rest of the building, it might be difficult to control cooling and air pressure levels. Duct work seals are important for maintaining a balanced air conditioning system and high static air pressure. Adequate cooling capacity means little if the direction and rate of air flow cannot be controlled because of poor duct sealing.
General Site Preparation Guidelines Environmental Elements • Use a dust-absorbent cloth mop rather than a dry mop to clean tile floors. Special precautions are necessary if the computer room is near a source of air pollution. Some air pollutants, especially hydrogen sulfide, are not only unpleasant but corrosive as well. Hydrogen sulfide damages wiring and delicate sound equipment. The use of activated charcoal filters reduces this form of air pollution.
General Site Preparation Guidelines Environmental Elements Static Protection Measures Follow these precautions to minimize possible ESD-induced failures in the computer room: • Install conductive flooring (conductive adhesive must be used when laying tiles). • Use conductive wax if waxed floors are necessary. • Ensure that all equipment and flooring are properly grounded and are at the same ground potential. • Use conductive tables and chairs.
General Site Preparation Guidelines Facility Characteristics Facility Characteristics This section contains information about facility characteristics that must be considered for the installation or operation of the server. Facility characteristics are: • Floor loading • Windows • Altitude effects Floor Loading The computer room floor must be able to support the total weight of the installed computer system as well as the weight of the individual cabinets as they are moved into position.
General Site Preparation Guidelines Facility Characteristics Table 2-3 Floor Loading Term Definitions (Continued) Term Definition Concentrated load The load that a floor panel can support on a one square inch (6.45 cm2) area at the panel’s weakest point (typically the center of the panel), without the surface of the panel deflecting more than a predetermined amount. Ultimate load The maximum load (per floor panel) that the floor system can support without failure.
General Site Preparation Guidelines Facility Characteristics Table 2-4 Typical Raised Floor Specifications (Continued) Itema Rating Ultimate load 4000 lb (1814 kg) per panel Rolling load 400 lb (181 kg) Average floor load 500 lb (227 kg) a. From Table 2-3 on page 25 b. With 0.08 in. (0.2 cm) of span maximum deflection Windows Avoid housing computers in a room with windows. Sunlight entering a computer room can cause problems. Magnetic tape storage media is damaged if exposed to direct sunlight.
General Site Preparation Guidelines Space Requirements Space Requirements This section contains information about space requirements for a server. This data should be used as the basic guideline for space plan developments. Other factors, such as airflow, lighting, and equipment space requirements must also be considered. Delivery Space Requirements There should be enough clearance to move equipment safely from the receiving area to the computer room.
General Site Preparation Guidelines Space Requirements The service area space requirements, shown in Figure 2-3, are minimum dimensions. If other equipment is located so that it exhausts heated air near the cooling air intakes of the computer system cabinets, larger space requirements are needed to keep ambient air intake to the computer system cabinets within the specified temperature and humidity ranges.
General Site Preparation Guidelines Equipment Footprint Templates Equipment Footprint Templates The equipment footprint template and floor plan grid are drawn to the same scale (0.25 in. = 1 ft). These templates are provided to show basic equipment dimensions and space requirements for servicing. The service areas shown on the template drawings are lightly shaded.
General Site Preparation Guidelines Computer Room Layout Plan Computer Room Layout Plan Use the following procedure to create a computer room layout plan: 1. Remove the floor plan grid from the document. See Figure 2-4. 2. Remove a copy of each applicable equipment footprint template. See Figure 2-3. 3. Cut out each template selected in 2, then place it on the floor plan grid.
General Site Preparation Guidelines Computer Room Layout Plan 4. Position the pieces until the desired layout is obtained, then fasten the pieces to the grid. Mark locations of computer room doors, air conditioning floor vents, utility outlets, and so on.
General Site Preparation Guidelines Power Plug Configuration Power Plug Configuration There are several different power cables designed for use with hp servers. The region the server ships to will determine which power cable ships with the server. The following provides the site preparation specialist with the knowledge of what to expect to receive based on the regional shipping destination.
General Site Preparation Guidelines Power Plug Configuration NOTE This collection of examples is not meant to be all inclusive nor is it meant to imply every plug shown is one that is available for the server.
General Site Preparation Guidelines Power Plug Configuration Figure 2-11 L6-30 Plug Figure 2-12 NEMA 5-20P Plug Figure 2-13 ISI 32 Plug Chapter 2 35
General Site Preparation Guidelines Power Plug Configuration Figure 2-14 GB 1002 Plug Power Cable The power cable length and configuration will vary based on the region to which the server ships. This is an example of one power cable configuration used to supply power to the server.
General Site Preparation Guidelines Conversion Factors and Formulas Conversion Factors and Formulas The conversion factors provided in this appendix are intended to ease data calculation for systems that do not conform specifically to the configurations listed in this Site Preparation Guide. Listed below are the conversion factors used in this document, as well as additional conversion factors which might be helpful in determining those factors required for site planning.
General Site Preparation Guidelines Example of an Installation Schedule Example of an Installation Schedule The following schedule lists the sequence of events for a typical system installation: • 60 days before installation — Floor plan design completed and mailed to HP (if required to be an HP task) • 30 days before installation — Primary power and air conditioning installation completed — Telephone and data cables installed — Fire protection equipment installed — Major facility changes completed — Sp
General Site Preparation Guidelines Sample Site Inspection Checklist Sample Site Inspection Checklist Table 2-5 Customer and HP Information Customer Information Name: Phone Number: Street Address: City or Town: State or Province: Country Zip or postal code: Primary customer contact: Phone Number: Secondary customer contact: Phone Number: Traffic coordinator: Phone Number: Hewlett-Packard information Sales representative Order Number: Representative making survey Date: Scheduled delivery d
General Site Preparation Guidelines Sample Site Inspection Checklist Table 2-6 Site Inspection Checklist (Continued) Please check either Yes or No. If No, include comment or date 7. Are there channels or cutouts for cable routing? 8. Is there a network line available? 9. Is a telephone line available? 10. Are customer supplied peripheral cables and LAN cables available and of the proper type? 11. Are floor tiles in good condition and properly braced? 12.
General Site Preparation Guidelines Sample Site Inspection Checklist Table 2-6 Site Inspection Checklist (Continued) Please check either Yes or No. If No, include comment or date 24. Is there a fire protection system in the computer room? 25. Is antistatic flooring installed? 26. Are there any equipment servicing hazards (loose ground wires, poor lighting, and so on.)? Comment or Date Cooling No. Area or condition 27. Can cooling be maintained between 5°C and 35°C (up to 5000 ft.
General Site Preparation Guidelines Delivery Survey Delivery Survey The delivery survey forms list delivery or installation requirements. If any of the items on the list apply, enter the appropriate information in the areas provided on the form. Special instructions or recommendations should be entered on the special instructions or recommendations form.
General Site Preparation Guidelines Delivery Survey Figure 2-16 Delivery Survey (Part 1) DELIVERY CHECKLIST DOCK DELIVERY Yes Is dock large enough for a semitrailer? No Circle the location of the dock and give street name if different than address. North East West South STREET DELIVERY Circle the location of access door and list street name if different than address. North East West South List height and width of access door. List special permits (if required) for street delivery.
General Site Preparation Guidelines Delivery Survey Figure 2-17 Delivery Survey (Part 2) ELEVATOR Fill in the following information if an elevator is required to move equipment. Capacity (lb or kg) Depth Height Width Height Depth Width STAIRS Please list number of flights and stairway dimensions.
General Site Preparation Guidelines Delivery Survey Site Preparation Glossary A-B Apparent power A value of power for AC circuits that is calculated as the product of RMS current times RMS voltage, without taking the power factor into account. ASHRAE Standard 52-76 Industry standard for air filtration efficiency set forth by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. ASL Above sea level. board A printed circuit assembly (PCA). Also called a card or adapter.
General Site Preparation Guidelines Delivery Survey L-N Latent cooling capacity An air conditioning systems capability to remove heat from the air. Leakage current A term relating to current flowing between the AC supply wires and earth ground. The term does not necessarily denote a fault condition. In power supplies, leakage current usually refers to the 60 Hertz current, which flows through the EMI filter capacitors that are connected between the AC lines and ground.
General Site Preparation Guidelines Delivery Survey True power In an AC circuit, true power is the actual power consumed. It is distinguished from apparent power by eliminating the reactive power component that may be present. Typical input current The operating current of the product measured using a typical load and target voltage. Typical power consumption Represents the expected power consumption of a given configuration.
General Site Preparation Guidelines Delivery Survey 48 Chapter 2
Index A air conditioning system recommendations, 20 air distribution system room space return air, 21 air ducts, 7 illustrated, 7 average floor loading, 26 B backplane mass storage, 2 system, 2, 5 basic air conditioning equipment requirements, 19 basic air distribution systems, 20 C cell board, 2, 5 circuit breaker, 13 component power requirements, 3 computer room layout plan, 31 computer room safety fire protection, 12 computer system sample installation schedule, 38 D data communications cables, 18 dimens
Index R raised floor ground system, illustrated, 17 S sources of electrical disturbances, 13 space requirements, 28 computer room layout, 31 delivery space requirements, 28 equipment footprint templates, 30 system backplane, 2, 5 system installation guidelines, 18 data communications cables, 18 wiring connections, 18 system specifications, 1 T typical installation schedule, 38 W wiring connections, 18 50
