Site Preparation Guide Server Expansion Unit Third Edition Manufacturing Part Number : A6434-96018 October 2006 Printed in the U.S.A.
Legal Notices The information in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be held liable for errors contained herein or direct, indirect, special, incidental or consequential damages in connection with the furnishing, performance, or use of this material. Restricted Rights Legend.
Contents 1. System Specifications Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Breaker . .
Contents Equipment Footprint Templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Computer Room Layout Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables Table 1-1. Server Expansion Unit Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Table 1-2. Server Expansion Unit Component Weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Table 1-3. Power Cords. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Table 1-4. AC Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables vi
Figures Figure 1-1. Airflow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure A-1. Raised Foor Metal Strip Ground System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure A-2. C20 Male Receptacle (at power supply) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Figure A-3. C19 Female Plug (on one end of the power cord) . . . . . . . . . . . . . . . . . . . . . . . . .
Figures viii
1 System Specifications This chapter describes the basic 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 Server Expansion Unit Dimensions and Weights Standalone Packaged Height—Inches (centimeters) 15.8 (40.0) 28.0 (71.1) Width—Inches (centimeters) 17.5 (44.5) 28.38 (72.1) Depth—Inches (centimeters) 30.0 (76.2) 35.75 (90.8) Weighta—Pounds (kilograms) 165 (74.8) 210.6 (95.53) a. Shipping box, pallet, and container adds approximately 45.
System Specifications Electrical Specifications Electrical Specifications This section provides electrical specifications for the Server Expansion Unit. Grounding The site building shall provide a safety ground/protective earth for each AC service entrance to all cabinets. Install a PE (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 System Power Specifications Table 1-4 and Table 1-5 list the AC power requirements for a Server Expansion Unit. These tables provide information to help determine the amount of AC power needed for your computer room.
System Specifications Electrical Specifications 3. “Typical maximum power” is the input power measured at the AC input expressed in Watts and Volt-Amps, and the measured maximum worst case power consumption. This number represents the largest power consumption for the server under laboratory conditions, using aggressive software applications designed specifically to work the system at maximum loads and power consumption.
System Specifications Environmental Specifications Environmental Specifications This section provides the environmental, power dissipation, noise emission, and air flow specifications for the Server Expansion Unit. Temperature and Humidity The cabinet is actively cooled using forced convection in a Class C1-modified environment. The recommended humidity level for Class C1 is 40 to 55% relative humidity (RH).
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 off of 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 Acoustic Noise Specification The acoustic noise specification for the Server Expansion Unit is 57.1 db (sound pressure level at bystander position) when connected to the HP 9000 rp8400 server as the host system. It is appropriate for dedicated computer room environments, not office environments. The LwA is 7.4 Bels.
A 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 • 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 Sources of Voltage Fluctuations Voltage fluctuations, sometimes called glitches, affect the quality of electrical power.
General Site Preparation Guidelines Electrical Factors Power System Protection The server can be protected from the sources of many of these electrical disturbances by using: • A dedicated power distribution system • Power conditioning equipment • Over- and under-voltage detection and protection circuits • Screening to cancel out the effects of undesirable transmissions • Lightning arresters on power cables to protect equipment against electrical storms Precautions have been taken during power dis
General Site Preparation Guidelines Electrical Factors Grounding Systems IT Power System This product has not been evaluated for connection to an IT power system (an AC distribution system having no direct connection to earth according to IEC 60950).
General Site Preparation Guidelines Electrical Factors Cabinet Performance Grounding (High-Frequency Ground) Signal interconnects between system cabinets require high-frequency ground return paths. Connect all cabinets to site ground. NOTE In some cases, power distribution system green (green/yellow) wire ground conductors are too long and inductive to provide adequate high frequency ground return paths.
General Site Preparation Guidelines Electrical Factors Raised Floor “High-Frequency Noise” Grounding If a raised floor system is used, install a complete signal reference grid (SRG) for maintaining equal potential over a broad band of frequencies. The grid should be connected to the equipment cabinet and electrical service entrance ground at multiple connection points using a minimum #6 AWG (16 mm) wire ground conductor. Figure A-1 on page 17 illustrates a metallic strip grounding system.
General Site Preparation Guidelines Electrical Factors Figure A-1 Raised Foor Metal Strip Ground System Floor panel Ground wire to power panel Hex bolt Grounding grid element Grounding clamp Band and pedestal Appendix A Grounding braid to computer equipment 60SP010A 11/30/99 17
General Site Preparation Guidelines Electrical Factors Equipment Grounding Implementation Details Connect all HP equipment cabinets to the site ground grid as follows: Step 1. Attach one end of each ground strap to the applicable cabinet ground lug. Step 2. Attach the other end to the nearest pedestal base (raised floor) or cable trough ground point (nonraised floor). Step 3. Check that the braid contact on each end of the ground strap consists of a terminal and connection hardware (a 1/4-in (6.
General Site Preparation Guidelines Environmental Elements Environmental Elements The following environmental elements can affect a server installation: • Computer room preparation • Cooling requirements • Humidity level • Air-conditioning ducts • Dust and pollution control • ESD prevention • Acoustics (noise reduction) Computer Room Preparation The following guidelines are recommended when preparing a computer room for a server: • Locate the computer room away from the exterior walls of the
General Site Preparation Guidelines Environmental Elements • Air distribution • System controls adequate to maintain the computer room within specified operating ranges. Lighting and personnel must also be included. For example, a person dissipates about 450 BTUs per hour while performing a typical computer room task. At altitudes above 10,000 feet (3048 m), the lower air density reduces the cooling capability of air-conditioning systems.
General Site Preparation Guidelines Environmental Elements Return air from an under floor air-distribution system can be ducted return air (DRA) above the ceiling. Perforated floor panels (available from the raised floor manufacturer) should be located around the front of the system cabinets. Supply air emitted though the perforated floor panels is then available near the cooling air intake vents of the server cabinets.
General Site Preparation Guidelines Environmental Elements Specifically, disk drives, tape drives, and some other mechanical devices can have bearing failures resulting from airborne abrasive particles. Dust might also blanket electronic components like printed circuit boards, causing premature failure due to excess heat or humidity buildup on the boards. Other failures to power supplies and other electronic components can be caused by metallically-conductive particles, including zinc whiskers.
General Site Preparation Guidelines Environmental Elements ESD Prevention Static charges (voltage levels) occur when objects are separated or rubbed together.
General Site Preparation Guidelines Environmental Elements Acoustics Computer equipment and air-conditioning blowers cause computer rooms to be noisy. Ambient noise level in a computer room can be reduced as follows: • Dropped ceiling—Cover with a commercial grade of fire-resistant, acoustic-rated, fiberglass ceiling tile. • Sound deadening—Cover the walls with curtains or other sound deadening material. • Removable partitions—Use foam rubber models for most effectiveness.
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 server as well as the weight of the individual cabinets as they are moved into position.
General Site Preparation Guidelines Facility Characteristics Table A-2 Floor Loading Term Definitions (Continued) Term Definition Concentrated load The load that a floor panel can support on a 1-in2 (6.45-cm2) area at the panels 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 A-3 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 A-2 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 the 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 • Access to air-conditioning ducts, filters, lighting, and electrical power hardware • Power conditioning equipment • Cabinets for cleaning materials • Maintenance area and spare parts Floor Plan Grid A floor plan grid is used to plan the location of equipment in the computer room.
General Site Preparation Guidelines Power Plug Configuration Power Plug Configuration Several different power cables are designed for use with HP servers. The region the server ships to will determine which power cable ships with the server. The following information 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 Several examples follow, though this list is not meant to be all-inclusive nor is this list meant to imply every plug shown is one that is available for the server.
General Site Preparation Guidelines Power Plug Configuration Figure A-8 L6-30 Plug Figure A-9 NEMA 5-20P Plug Figure A-10 ISI 32 Plug Figure A-11 GB 1002 Plug 32 Appendix A
General Site Preparation Guidelines Power Plug Configuration Power Cable The power cable length and configuration varies based on the region to where 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. The following list includes the conversion factors used in this document, as well as additional conversion factors that 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 A-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: HP information Sales representative Order Number: Representative making survey Date: Scheduled delivery date Table A-
General Site Preparation Guidelines Sample Site Inspection Checklist Table A-6 Site Inspection Checklist (Continued) Please check either Yes or No. If No, include comment number 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 A-6 Site Inspection Checklist (Continued) Please check either Yes or No. If No, include comment number 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 Number Area or condition 27.
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 • Special security requirements applicable to the facility, such as security clearance Figure A-13 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.
General Site Preparation Guidelines Delivery Survey Figure A-14 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 42 Appendix A
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 term 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 The capability of an air-conditioning system 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-Hz 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 46 Appendix A
B Templates This appendix contains blank floor plan grids and equipment templates. Combine the necessary number of floor plan grid sheets to create a scaled version of the computer room floor plan.
Templates Figure B-1 illustrates the overall dimensions required for a Server Expansion Unit. Figure B-1 Server Expansion Unit Space Requirements 23.5 in 59.7 cm 36.5 in 92.7 cm 78.8 in 1.
Templates Equipment Footprint Templates Equipment Footprint Templates Equipment footprint templates are drawn to the same scale as the floor plan grid (1/4 inch = 1 foot). 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. The equipment templates should be used with the floor plan grid to define the location of the equipment that will be installed in your computer room.
Templates Computer Room Layout Plan Computer Room Layout Plan Use the following procedure to create a computer room layout plan: Step 1. Remove several copies of the floor plan grid. Step 2. Cut and join them together (as necessary) to create a scale model floor plan of your computer room. Step 3. Remove a copy of each applicable equipment footprint template. Step 4. Cut out each template selected in Step 3; then place it on the floor plan grid created in Step 2. Step 5.
Templates Computer Room Layout Plan NOTE Figure B-2 Attach a reduced copy of the completed floor plan to the site survey. See Table A-5 and Table A-6 located in “Sample Site Inspection Checklist” on page 36 for the checklist. Hewlett-Packard installation specialist use this floor plan during equipment installation. Server Expansion Unit Cabinet Template 24.0 in 58.8 cm Rack Rear Rear Anti-Tip Foot With Ballasat Service Area 36.0 in 88.2 cm Rack 53.0 in. 129.9 cm Rack 36.0 in. 88.
Templates Computer Room Layout Plan Figure B-3 Planning Grid Scale: 1/4 inch = 1 foot 60SP016A 12/20/99 52 Appendix B
Templates Computer Room Layout Plan Figure B-4 Planning Grid Scale: 1/4 inch = 1 foot 60SP016A 12/20/99 Appendix B 53
Templates Computer Room Layout Plan Figure B-5 Planning Grid Scale: 1/4 inch = 1 foot 60SP016A 12/20/99 54 Appendix B
Templates Computer Room Layout Plan Figure B-6 Planning Grid Scale: 1/4 inch = 1 foot 60SP016A 12/20/99 Appendix B 55
Templates Computer Room Layout Plan Figure B-7 Planning Grid Scale: 1/4 inch = 1 foot 60SP016A 12/20/99 56 Appendix B
Index A AC power specifications, 3 air ducts, 8 illustrated, 8 air-conditioning ducts, 21 requirements, 19 system recommendations, 20 air-distribution system room space return air, 20 B backplane mass storage, 2 system, 2, 6 basic air-distribution systems, 20 C cell board, 2, 6 circuit breaker, 3 component power requirements, 4 computer room layout plan, 50 computer room safety fire protection, 10 computer system air ducts, 8 environmental elements, 19 power system protection, 13 sample installation schedul
Index S server computer room layout, 50 sources of electrical disturbances, 12 space requirements, 28 computer room layout, 50 delivery space requirements, 28 equipment footprint templates, 49 system backplane, 2, 6 system installation guidelines, 18 data communications cables, 18 wiring connections, 18 system specifications, 1 T temperature, 6 W wiring connections, 18 58
