Home

HP rp7410 Getting Started Guide

Contents

1. pollution control 20 power distribution hardware 12 safety grounding 13 power plug configuration 29 power quality 11 power system protection 12 45 R raised floor ground system illustrated 15 loading 26 specifications 26 relative humidity 24 row orientation 19 S site inspection checklist 33 sources of electrical disturbances 11 space requirements 27 delivery space requirements 27 system installation guidelines 15 data communications cables 16 wiring connections 16 I technical requirements based on customer 27 telephone use 18 W windows 27 wiring connections 16 46 Index
2. 1meter 1 09 yards 1in 2 54 centimeters 1 ft 0 305 meters 1CFM 1 7m hour e kVA conversions Three phase kVA V x A x V3 1000 e Single phase kVA V x A 1000 Formulas e kVA voltage x current amps e Watts VA x PF e Btu Watts x 3 41 e C 32 1 8a F Example of an Installation Schedule 32 The following schedule lists the sequence of events for a typical system installation e Sixty days before installation Floor plan design is completed and mailed to HP if required to be an HP task e Thirty days before installation Primary power and air conditioning installation are completed Telephone and data cables are installed Fire protection equipment is installed Major facility changes are completed Special delivery requirements are defined Site inspection checklist is completed See Table 1 7 and Table 1 8 page 33 for sample customer information forms and site inspection checklists Delivery survey is completed See Figure 1 13 page 36 and Figure 1 14 page 37 for a sample delivery survey General Site Preparation Guidelines Asigned copy of the site inspection and delivery survey is mailed to HP Site inspection and predelivery coordination meeting is arranged with an HP representative to review the inspection checklist and to arrange an installation schedule e Seven days before installation Final check is made with an HP site preparation spe
3. regular Noncondensing regular Noncondensing ambient ambient temp temp F F All Classes 40 to 80 10 to 90 32 5 to 45 10 to 90 29 40 to 176 41 to 113 Special or See the contract or industry requirements Contract ET NOTE The values shown in Table 1 6 page 28 meet or exceed all ASHRAE specifications Floor Plan Grid 28 Use a floor plan grid designing the location of equipment in the computer room Also use the floor plan grid when arranging the locations of the following items e Air conditioning vents e Lighting fixtures e Utility outlets e Access areas for power wiring and air conditioning filters General Site Preparation Guidelines e Equipment cable routing e Doors Power Plug Configuration ET Several power cables are designed for use with HP products The region the product ships to will determine which power cable ships with the product Figure 1 2 to Figure 1 11 page 31 provide an overview of the power plug configurations available NOTE The following 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 product Female End of Power Cable The female end of the HP product is a C19 plug that connects the C20 receptacle in each power supply installed in the HP product Figure 1 2 C20 Male Receptacle at Power Supply Figure 1 3 C19 Female Plug on One End of the Powe
4. Safety and regulatory labels on computer equipment list the ratings for maximum power consumption conditions Even though you will not normally reach maximum conditions size all electrical distribution infrastructures to meet maximum conditions It is better to rate up rather than down For example if the marked electrical voltage is 15 amperes A on a product depending on your local electrical code the electrical infrastructure should include 20A receptacles 20A sized wiring and 20A breakers Undersizing the wiring might save costs in the beginning but it will cause problems as infrastructure grows Average sized wiring can be used with power quality devices such as UPSs but not with the electrical infrastructure In determining the power requirements e Size electrical infrastructure for maximum rated consumption Size air conditioning and UPSs with typical ratings but realize that overloading might take place with additional growth of the infrastructure 8 General Site Preparation Guidelines NOTE Set cooling for the maximum rated power output of the room and develop a growth plan for the cooling infrastructure Grounding Systems WARNING Follow electrical code when connecting equipment AC power ground wire to the AC distribution point Failure to properly ground the equipment or the floor can lead to shock hazard HP computer hardware has been tested only on systems where protective earth is integral
5. you might need to modify the recommended temperature ranges For each 1 000 foot 305 m increase in altitude above 10 000 feet up to a maximum of 15 000 feet 4 572 m subtract 0 83 C 1 49 F from the upper limit of the temperature range Air Conditioning System Guidelines Use the following guidelines when designing an air conditioning system and selecting the necessary equipment e The computer room air conditioning system 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 product availability redundant air conditioning equipment or capacity The system should be capable of handling any future product expansion e Air conditioning equipment air filters should have a minimum rating of 45 based on ASHRAE Standard 52 76 Dust Spot Efficiency Test e 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 descending order of preference 1 Complete self contained package units with remote condensers These systems are available with up or down discharge and are usually located in the computer room 2 Chilled water package unit with remote chilled water plant These systems are available with up or down discharge
6. 6836 This service is available 24 hours a day 7 days a week For continuous quality improvement calls may be recorded or monitored If you have purchased a Care Pack service upgrade call 1 800 633 3600 For more information about Care Packs refer to the HP website http www hp com hps In other locations see the Contact HP worldwide in English webpage http welcome hp com country us en wwcontact html Documentation feedback HP welcomes your feedback To make comments and suggestions about product documentation send a message to docsfeedback hp com Include the document title and manufacturing part number All submissions become the property of HP Business Support Center The following website provides support information for many HP business products www hp com go bizsupport Contacting HP 39 40 Glossary A B apparent power ASHRAE Standard 52 76 ASL board Btu h C CEM chilled water system CompactPCI D K daisy chain dehumidification derate downflow EIA unit ESD humidification inrush current KVA LN LAHJ latent cooling capacity leakage current A value of power for AC circuits that is calculated as the product of root mean square RMS current times RMS voltage without taking the power factor into account Industry standard term for air filtration efficiency set forth by the American Society of Heating Refrigerating and Air Conditioning Engineer
7. Class 3K1 5 Local product groups must make business decisions for the appropriate values With installed media the minimum temperature is 10 C 50 F and maximum relative humidity is limited to 8076 Specific media requirements may vary Include the possible addition of equipment or other changes in space requirements to the space plan and create an equipment layout plan which contains provisions for the following e Channels or fixtures used for routing data cables and power cables e Access to air conditioning ducts filters lighting and electrical power hardware Power conditioning equipment e Cabinets for cleaning materials e Maintenance area and spare parts Storage and Powered Off See Table 1 6 page 28 for storage and powered off conditions The information described in the following table provides typical temperature and relative humidity ranges for HP equipment that are subjected to the following environmental conditions e Removed from the original shipping container and installed in the typical environment e Intransit shipment or in storage in shipping material or container See Table 1 5 page 27 for the environmental values to operating equipment Table 1 6 Typical Range of Product Power Off Storage and Shipping Environments Type of Product Storage Powered Off installed Temp Relative Dew Point Temp Relative Dew Point C dry bulb Humidity 7 max C dry bulb Humidity 70 max
8. Ret te taber H304 Sah ka RAE y se WE WER EEEE ETEEN RAN H n Ew Ne ca 26 Mee ER E ea RD T 27 Space Requirements ova entes ut eee wear e t b re nerve ween ma 27 Delivery Space Requirements y n ka hk selik ker ne k ye keye E ROM edi side kive ne kuva beke Me r yek ede a H de d 27 Operational Space BegtitremientSons ines emet dium y ke iaaa aaa p k te bi n Za y e w d eu a HEAR 27 Stot ge and Powered Off 3y x24440445x51 4y2 a ME e Ea ceteri E b n dl yn P ween dea Ken Ve ee RR E e yan k ket 28 Foor Plan Sk BOO _ _ ee Thww eeer m oear rararXrdXrd eee 28 Power Plug Config laltlo n ire enters aa 41yan s dd dade Rud ii ioo a ev niodo tetti 29 Conversion Factors and Formulas seeeeeeeeeeeeee eene eene buwe le ense nei u lak aka y yel yu xelka aa beka 31 Example of an installa tom Schedule iube toot er eiae tu He Ken bein rade ade M H NA 32 Sample Site Inspector Checklist ueniet ho eri erase rii eoi bei detecte sita ieget ete feta ep aiaia 33 Delivery SURVEY E T 35 2 SUpportdnd olher FesoUfess apa aad dama bud M E na b ub Ev beh 39 Gonfach s ni aeu o evaderet tag tei eate ee ge etat ia ed ance Tame Sapete edd dudes utt 39 Before vou contact EIE ica pee da ede Que eiu e die Ce ve vac ENG ERR RR FEN HA Ge sbi D ER ya ka leze gana 39 HP ontact information eet cete etes tee teve bets edes tee debe rep ete ve bed edv voee
9. also contribute to a buildup of high frequency noise CAUTION Connections that are too loose or tight can have a high impedance which cause serious problems such as erratic equipment operation A high impedance connection overheats and sometimes causes fire or high temperatures that can destroy hard to replace components such as distribution panels or system bus bars Wiring connections must be properly torqued Many equipment manufacturers specify the proper connection torque values for their hardware See the safety requirements provided by your wire manufacturer Ground connections must be made only on a conductive nonpainted surface When equipment vibration is present lock washers must be used on all connections to prevent connection hardware from working loose Data Communications Cables Power transformers create high energy fields in the form of electromagnetic interference EMI Heavy foot traffic can create electrostatic discharge ESD which can damage electronic components Route data communications cables away from these areas and use shielded data communications cables that meet approved industry standards to reduce the effects of external energy fields Environmental Elements Synopsis Air Quality Proper computer room preparation improves air quality It provides a return on investment by making a system more stable and by decreasing unexpected downtime HP recommends putting appropriate effort into maximizing e
10. and are usually located in the computer room 3 Central station air handling units with remote refrigeration equipment These systems are usually located outside the computer room Basic Air Distribution Systems 22 A basic air distribution system includes supply air and return air See Table 1 5 Typical Environments of Customer Installations page 27 for more information Configure the air distribution system to deliver adequate supply air to the cooling air intake vents of the product equipment cabinets Maintain supply air temperature within the following parameters e Ceiling air supply system From 12 8 C 55 F to 15 6 C 60 F e Floor air supply system At least 15 6 C 60 F If you use a ceiling plenum return air CPRA system or a ducted ceiling return air system place the return air grills in the ceiling above the exhaust area or the exhaust row The following three types of air distribution systems are listed in descending order of preference General Site Preparation Guidelines 1 Under floor air distribution system Downflow air conditioning equipment located on the raised floor of the computer room uses the cavity beneath the raised floor as plenum for the supply air Return air from an under floor air distribution system can be ducted return air DRA above the ceiling Locate perforated floor panels available from the raised floor manufacturer around the front of the system cabinets Sup
11. by metallic particulate contamination During recent years concern has increased regarding metallic particulate contamination in computer rooms where these conductive contaminants are formed on the bottom of some raised floor tiles Although this problem is relatively rare it can be an issue within your computer room Because metallic contamination can cause intermittent or permanent failures on your electronic equipment HP strongly recommends to test your site for metallic particulate contamination before installing electronic equipment Cooling Requirements Air conditioning equipment requirements and recommendations are described in the following sections Basic Air Conditioning Equipment Requirements The cooling capacity of the installed air conditioning equipment for the computer room must be sufficient to offset the computer equipment dissipation loads as well as any space envelope heat gain This equipment must include e Air filtration e Cooling or dehumidification Environmental Elements 21 e Humidification e Reheating e Air distribution System controls When calculating cooling requirements include the heat generated by lighting and personnel For example a person dissipates about 450 Btus per hour while performing a typical computer room task At altitudes above 10 000 feet 3 048 m the lower air density reduces the cooling capability of air conditioning systems If your facility is located above this altitude
12. dep opea a 39 Doc mentation feedback eene e ette vek oot week ee ek A veke esa e Eoo esen a E veya ela wele K RA 39 Bu smess S pport Center yy sisiyan Hata E neb n c rb e Ku cp du eka V h MR a ODE 39 VSS SCI Yi aro der ne O KI iet ves ate O re sod ha NE A enh nee dat cad 4 Tare dete N DE N M eit ey CE E E mE 45 4 Table of Contents List of Figures 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 Raised Floor Metal Strip Ground Systeri s eoa n ba equa Lo rite ut beta utet teed sub dud 15 C20 Male Receptacle at Power SupD y E ai ipie tein ee tees xek kek keke ke gea 29 C19 Female Plug on One End of the Power Ord een eee e Eua ca telo 29 Unterminated PIG itr esos tetendit e wp H z v ra E RO ret ether j k ne des bul bayerite DIR E MUR GRE 29 IE IND C 30 WEG 309 ND tn dn vs ati A ie uro ra ORI ME MP 30 CBE 757 IP IOgo oe eret tts hn Sade tedesca uses ance ve bts ta ec bo ou ede ues ve c t cuta Bata ee 30 L6 30 Plug tz A T evel rdi e vibe pere ivan IR Ie 30 NEMA 5 20P Plug left and receptacle right E yr errat mee nre reno agen en ue 30 leuis 31 MB NOU 2 WEE c 31 6 20 Power Cable Sese rtv dec etum a barre E RN eek ee o M DX M PARET 31 Delivery Survey Part i 1545441543 2013555130009 used M R AER k UA NONE RON SD QI VROTU EIN M NOE k 36
13. power supply Root mean square Term that refers to the most common mathematical method of defining the effective voltage or current of an AC wave To determine RMS value three mathematical operations are carried out on the function representing the AC waveform 1 The square of the waveform function usually a sine wave is determined 2 The function resulting from step 1 is averaged over time 3 The square root of the function resulting from step 2 is found Maximum wattage of a given configuration assuming worst case conditions thermal tolerances work loads and so forth on all system components It is extremely unlikely that any customer will experience this level of power consumption The unit of measure used in air conditioning to describe the heating or cooling capacity of a system One ton of heat represents the amount of heat needed to melt 1 ton 2 000 Ib of ice in 1 hour and 12 000 Btu h equals 1 ton of heat 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 The operating current of the product measured using a typical load and target voltage Represents the expected power consumption of a given configuration The typical value is the approximate power consumption that a customer will most likely experience and can use for power budgeting purposes A vapor seal is an essential part of preventing moisture infil
14. to it e Concentrate high density heat loads in a tightly controlled area High density loads are equivalent to one cabinet of 3 kilowatts or more e Maintain airspeed through vent tiles between 300 to 600 feet per minute 91 44 to 182 88 meters per minute for high density cooling Air moving too slowly will not supply products placed higher while air moving too quickly will bypass products placed lower 2 HP Controlled Computer Room is equal to the Instrumentation Systems and Automation Society ISA Class G1 which states Mild Corrosion is NOT a factor in determining equipment reliability Environmental Elements 17 Also be aware that the racking cabinets are integral to the proper environmental support for mounted equipment See the following additional items e Cabinet blanking panels must be used in non populated U space levels to prevent unpredictable air mixing This can lead to No Trouble Found NTF diagnosis e Use the highest percentage cabinet perforation possible to allow the proper ventilation in the cabinet e Cabinet doors must be used in the front and the rear They must be grounded to the cabinet using existing ground lugs and ground straps or cables Equipment Orientation Data center equipment orientation or heat load must encourage sufficient airflow If exhausted heat must move over or around a cabinet air vortexes might be created resulting in airflow inefficiency throughout the data center and inside the
15. 500 Ib 227 kg 1 With 0 08 in 0 2 cm of span maximum deflection General Site Preparation Guidelines Windows Do not house 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 Also the heat generated by sunlight places an additional load on the cooling system Space Requirements This section contains information about space requirements for the product Use this data as the basic guideline for space plan developments Also consider factors such as airflow lighting and equipment space requirements Delivery Space Requirements The site must have enough clearance to move equipment safely from the receiving area to the computer room Permanent obstructions such as pillars or narrow doorway s can cause equipment damage Include the possible removal of walls or doors in the delivery plans Operational Space Requirements Consider the following factors in addition to the basic equipment dimensions e Eliminate obstructions to equipment intake or exhaust flow e Determine locations of lighting fixtures and utility outlets affecting servicing operations Plan equipment layout to take advantage of lighting and utility outlets Do not forget to include clearance for opening and closing equipment doors e Provide sufficient clearance around the cabinets for proper cooling airflow through the equipment If other equipment is locat
16. Delivery Survey Patt 2 oes tre HEQ ki E kapan aud e PRO Feu HE VP aM MIN SEWE ERA A EE 37 List of Tables 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 6 Maximum Contaminant Gas Levels cccccccccccccccccscsccccccesccsscessccssceuscesseuscessceusecsseuusessseueeessseuunsess 21 Effect of Humidity on ESD Charge Levels teet keke kek kk kek kek 24 Floor Loading Term Definitions s r ressis erriei iieri ie diale sa inte HEWARE RR Rei dae dar Ma keles ay n a 25 Typical Raised Floor Specifications eco e to eqs ne teet ta espe keke kek ke kre kerk Ka Dd KRA KA KA KA 26 Typical Environments of Customer Installations tte ei neta rhon etin 27 Typical Range of Product Power Off Storage and Shipping Environmende 28 Customer and HP Informatio Mesne aa nk tetto eue eode c Needed ete eeu de es a ela eu Poe eed d Neo go Bi eel oce ba weeees 33 Site Inspection Checklist List of Tables 1 General Site Preparation Guidelines This guide contains recommendations and best practices to improve site efficiency and tolerance before installing or operating any Business Critical products The Best Practices found in this document closely align with third party engineering such as the ISA G1 environments This general information is intended for different product models and customer sites around the world and is not a substitute for recommendations or requirements from the manufacturer
17. Floor Loading The average floor load value is not appropriate for addressing raised floor ratings at the floor grid spacing level However it is useful for determining floor loading at the building level such as the area of solid floor or span of raised floor tiles covered by the product footprint Typical Raised Floor Site 26 A This section contains an example of a computer room raised floor system that is satisfactory for the installation of a product Based on specific information provided by HP Tate Access Floors has approved its Series 800 all steel access floor with bolt together stringers and 24 inches 61 0 cm by 24 inches 61 0 cm floor panels When the flooring is replaced or a new floor is installed Tate Access Floors recommends using the Series 1250 all steel access floor with bolt together stringers and 24 inches 61 0 cm by 24 inches 61 0 cm floor panels to support the HP installation NOTE If the specific floor being considered is other than a Tate Series 800 floor contact the specific floor manufacturer to evaluate the floor Table 1 4 lists specifications for the Tate Access Floors Series 800 raised floor system Table 1 4 Typical Raised Floor Specifications ltem Rating Dead load 7 lb ft 2 34 2 kg m Live load 313 Ib ft 2 1528 3 kg m Concentrated load 1 250 Ib 567 kg Ultimate load 4 000 Ib 1814 kg per panel Rolling load 400 Ib 181 kg Average floor load
18. Generic Site Preparation Guide art Number 5991 6018 ed HP P Published July 2010 Edition 6 if Legal Notices Copyright 2010 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 August 2005 P N is A7025 96015 Second Edition April 2008 P N changed to 5991 5990 Third Edition June 2009 P N changed to 5991 6018 Fourth Edition March 2010 P N appended with edition 4 Updated links Fifth Edition June 2010 P N appended with edition 5 Updated to product environmental level Sixth Edition July 2010 P N appended with edition 6 Corrected text elements Table of Contents 1 General Site Preparation Guidelines sse 7 Electrical Factors eoe Pen i eue eiecit S ee 7 OYDO j S S Ae ME 7 AC Electrical Distib tion 5y Stemi siisi 1450i r l n diol eh ken sa KER a EK Haa oci N e Henek K RL er M ete cones 7 AC Power Quality DeViC S sya a edv gesti teo Bek kerra k d n ts gee itunes cia toes dta iata k weney ek k 8 DUPS Recorimendatli fs 2 tb tbt ee Eye bee tb ee vebe y
19. HP customers who have a low occurrence of unexpected interruptions As your system availability needs increase these recommendations become more important Recommended electrical distribution hardware includes receptacles AC wiring conduits and breakers that are sized for maximum rated loads rather than for typical loads Do not exceed 75 feet 23 m between the receptacle and nearest X0 bond and the transformers because connection points can become loose over time and subject to loading problems HP recommends using a higher input voltage to the stepdown transformer within 75 feet 23 m For example if 480 volt current is available in the building ensure that distribution transformers in the data center are 480 208 volt stepdown In an optimum electrical distribution system 1 HP Controlled Computer Room is equal to the Instrumentation Systems and Automation Society ISA Class G1 which states Mild Corrosion is NOT a factor in determining equipment reliability Electrical Factors 7 e Electrical infrastructure is rated for maximum load e The distance from a receptacle to power source X0 is less than 75 feet 23 m e There are no daisy chained receptacles or hot neutral or ground wires The system is sourced from higher distribution voltages AC Power Quality Devices HP products have a wide range of voltage tolerances In general approximately 10 of the nominal voltage is sufficient for the marked electrical rated volta
20. a or vele 8 Power ConsampLHobse epe ipt geg iu audes eu iiiv temo e fr ceken Men t tsp hae gman E REK E 8 Grounding Sy SECIS o ime mente usce ben dik ra Heo DR oa tea DM i a Hek a CE 9 Comprehensive DISGUSSIOPLLa deni ee ttt tots ete is cesis c de vla eto dy a ease ti vp Ce tvi dete Ee Ana H k E H 9 Computer Room Sal tya c e eave eases ti i e Wa se cR epe e D E ERAN EE QNA EK LP ci bs BENE ERN santas 10 Fire Protections tette ve e Rer dte Ue e PRI ePi EET eS 10 Die SUpDEPSSIOD scere ten ERU MAR QV sdb aU eR teu 5a a KA RR WD eM a anon TE Mrs qu 10 Lighting Requirements for Equipment Servicing E oar ad eiae een ode 10 Cabinet Recommendations eese kerya hehe rhet esee rrt Ka ke ie sei week Ma bk Ow eaaet eser tede 10 Working space for Product Access obe nk ebeke tae useto isse aac dt bek bel s k MMC Dag at 11 lower Consumption oeste Mr tert ta RS Re il meses dig diene exte e rip con pee I po ptt EE pq Eet 11 Electrical Load Requirements Circuit Breaker SIZIDIe itt eee t fu Deni abit bdens 11 POWER eri C C X X 11 Sources Of Voltipe PIuctaatlonssoieii aote bere pecia tee Gb ebrei oderint ke an 11 Power Sy Stem Protection ovo sese p it epe pn RO ma eon Ope eoram eo na o ea dar en value ONE 12 Distribution Hardware ieu rei ER VER OO ES 12 Wire SelecHoOr EET TO T ben kelin bek y k n d 4i k n 12 Raceway Systems Electrical Condu
21. al circumstances should be used only in customer calculations with UPS and air conditioning sizing where remaining capacities are needed Modernequipment can measure electrical needs and make adjustments to lower electrical usage Lowering electrical costs becomes more critical in regions where power distribution may be overburdened The capability of a product recognizing and reacting to electrical needs is based on processor and firmware generating the action from the products engineered parameters This was not possible on products manufactured prior to 2007 The electrical infrastructure will continue to dictate a maximum In addition to the HP product 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 NOTE Peripheral equipment should have dedicated breakers Electrical Load Requirements Circuit Breaker Sizing we IMPORTANT Local authority has jurisdiction LAHJ must determine the final decision regarding adherence to country specific electrical codes and guidelines It is good practice to derate power distribution systems for the following reasons e To avoid nuisance tripping from load shifts or power transients do not run circuit protection devices continuously abov
22. al equipment weight by the area of its footprint expressed in lb ft kg m Floor loading can be an issue in both raised and nonraised flooring environments Rolling load can be the most detrimental in a raised flooring environment while total dead load can be an issue for either The information presented in this section addresses raised floor installations Facility Characteristics 25 2 NOTE Have a floor system consultant for the appropriate flooring environment verify any floor system under consideration for a product installation Raised Floor Loading A Raised floor loading is a function of the manufacturer s load specification and the positioning of the equipment relative to the raised floor grid While HP cannot assume responsibility for determining the suitability of a particular raised floor system it does provide the following guidelines e Because many raised floor systems do not have grid stringers between floor stands the lateral support for the floor stands depends on adjacent panels being in place To avoid compromising this type of floor system while gaining under floor access remove only one floor panel at a time e Larger floor grids bigger panels are generally rated for lighter loads CAUTION Do not position or install equipment cabinets on the raised floor system until you have carefully examined it to verify that it is adequate to support the appropriate installation Average
23. ame relative humidity level a high rate of airflow produces higher static charges than a low airflow rate 3 Some data in this table has been extrapolated For more information regarding ESD see the HP ESD Standard HP 00005 04 at http standards corp hp com smc hpstd pdf F HP0000504 pdf Relative Humidity Where possible maintain a humidity range of 40 to 55 Static Protection Measures Follow these precautions to minimize possible ESD induced failures in the computer room 24 General Site Preparation Guidelines e Maintain recommended humidity level and airflow rates in the computer room e Install conductive flooring use conductive adhesive when laying tiles Use conductive wax if waxed floors are necessary e Ensure that all equipment and flooring are properly grounded and are at the same ground potential e Use conductive tables and chairs e Usea grounded wrist strap or other grounding method when handling circuit boards Store spare electronic modules in antistatic containers 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 e Dropped ceiling Cover with a commercial grade of fire resistant acoustic rated fiberglass ceiling tile e Sound deadening Cover the walls with curtains or other sound deadening material e Removable partitions Use partitions constructed of foam rubber for greatest e
24. anch circuit available for equipment 20 Is the dedicated branch circuit less than 75 feet 22 86 m 21 Are the input circuit breakers adequate for equipment loads Safety Number Area or Condition Yes No 22 Is an emergency power shutoff switch available 23 Is a telephone available for emergency purposes 24 Does the computer room have a fire protection system 25 Does the computer room have antistatic flooring installed 26 Do any equipment servicing hazards exist loose ground wires poor lighting and so on Cooling Number Area or Condition Yes No 27 Can cooling be maintained between 5 C 41 F and 35 C 95 F up to 1 525 m 5 000 ft Derate 1 C 305 m 34 F 1 000 ft above 1 525 m 5 000 ft and up to 3 048 m 10 000 ft 28 Can temperature changes be held to 5 C 41 F per hour with tape media Can temperature changes be held to 20 C 68 F per hour without tape media 29 Can humidity level be maintained at 40 to 55 at 35 C 95 F noncondensing General Site Preparation Guidelines Table 1 8 Site Inspection Checklist continued Check either Yes or No If No include comment number or date Comment or Date 30 Are air conditioning filters installed and clean Storage Number _ Area or Condition Yes J No 31 Are cabinets available for tape and disc media 32 Is shelving available for documentation Training Number Area or Condition 33 Are per
25. by electromagnetic radiation the grounding system the electrical power connection excessive heat or blocking the natural airflow and connecting wires or cables The Federal Communications Commission FCC regulates a portion of this problem through Part 15 of its rules and regulations Even more stringent than the FCC Part 15 requirements NEBS covers a large range of requirements including criteria for personnel safety protection of property and operational continuity The documents cover such physical requirements as space planning temperature humidity fire earthquake vibration transportation acoustics air quality and illumination The documents also cover such electrical criteria as electrostatic discharge ESD electromagnetic interference EMI lightning and AC power fault steady state power induction corrosion DC potential difference electrical safety and bonding and grounding Printed Circuit Assembly also referred to as a printed circuit board PCB Currently the most popular local I O bus the Peripheral Component Interconnect PCI bus was developed by Intel and introduced in 1993 A consortium of companies involved in utilizing PCI for embedded applications The PCT Industrial Computer Manufacturers Group PICMG controls the PICMG specification The ratio of true power to apparent power in an AC circuit In power conversion technology power factor is used in conjunction with describing the AC input current to the
26. cialist to resolve any last minute problems A NOTE Not all installations follow a schedule like the one previously noted Sometimes a product is purchased through another vendor which can preclude a rigid schedule Other conditions could also prevent following this schedule For those situations consider a milestone schedule e Site Preparation Schedule with the customer as soon as possible after the order is placed e Site Verification Schedule with the customer a minimum of one to two days before the product is scheduled to be installed Sample Site Inspection Checklist See Table 1 7 and Table 1 8 page 33 They may be used to measure your progress Table 1 7 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 1 8 Site Inspection Checklist Check either Yes or No If No include comment number or date Comment or Date Computer Room Number Area or condition Yes No 1 Is there a completed floor plan 2 Is adequate space available for maintenance needs Front 36 inches 91 4 cm minimum and rear 36 inches 91 4 cm minimum are rec
27. des based on circuit over current device ratings Electrical Factors 13 Dual Power Source Grounding The use of dual power might create an electrical potential that can be hazardous to personnel and might cause performance issues for the equipment When using dual power sources measure voltage potentials with a high impedance digital multi meter DMM Dual power sources might originate from two different transformers or two different UPS devices Measure voltage potentials from ground pin to ground pin of these sources and verify them to be at or near 0 0 V Investigate voltage levels that measure above 3 0 V because increased voltages can be hazardous to personnel Cabinet Performance Grounding High Frequency Intercabinet Ground Some safety power distribution wires are too long and too inductive to provide adequate high frequency return paths For sufficient protection signal interconnects between system cabinets might need high frequency ground return paths in addition to the safety or power distribution system 50 60Hz grounding system HP recommends the use of a properly installed signal reference grid SRG also bonded to the 50 60Hz grounding system WARNING Do not use cabinet to floor ground straps in place of a properly installed safety 50 60Hz grounding system nor in place of a properly installed Signal Reference Grid An improperly installed grounding system can present a shock hazard to personnel Connect any power
28. e particulate contamination and power distribution of the environment Consider the following when planning equipment layout Use hot aisle exhaust and cold aisle intake orientation Route the airflow air conditioned supply and return to be parallel to the aisleways Adhere to the temperature and humidity standards located at the following web address http standards corp hp com smc hpstd pdf F HP0000501 pdf HP product specifications for temperature and humidity are measured at 1 9 inches 5 0 cm from air intake center of device Environmental Elements 19 Dust and Pollution Control 20 we Computer equipment can be adversely affected by dust and microscopic particles in the site environment 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 such as printed circuit boards causing premature failure due to excess heat or humidity buildup on the boards Failures to power supplies and other electronic components can be caused by metallically conductive particles including zinc and tin whiskers These metallic particles are conductive and can short circuit electronic components Use every effort to ensure that the environment is as dust and particulate free as possible See Metallic Particulate Contamination page 21 for additional details Smaller particles can pass through some filte
29. e 80 of their root mean square RMS current ratings e Safety agencies derate most power connectors to 80 of their RMS current ratings Power Quality HP products operate over a wide range of voltages and frequencies See the HP Corporate Power Standard HP 00005 03 at http standards corp hp com smc hpstd pdf F HP0000503 pdf The products are tested and shown to comply with EMC Specification EN50082 however damage can occur if these ranges are exceeded Severe electrical disturbances can surpass the design specifications of the equipment Sources of Voltage Fluctuations Voltage oscillations affect the quality of electrical power Common sources of these disturbances are Electrical Factors 11 e Fluctuations occurring within the facility s distribution system e Utility service low voltage conditions such as sags or brownouts e Wide and rapid variations in input voltage levels Wide and rapid variations in input power frequency e Electrical storms e Large inductive sources such as motors and welders e Faults in the distribution system wiring such as loose connections e Microwave radar radio or cell phone transmissions Power System Protection Protect the product from the many sources of these electrical disturbances by using e A dedicated power distribution system e Power conditioning equipment e Over and under voltage detection and protection circuits e Screening to cancel the effects of undesirable transmissi
30. ed so that it exhausts heated air near the cooling air intakes of the product cabinets more space is needed to keep ambient air intake to the product cabinets within the specified temperature and humidity ranges See Table 1 5 Typical Environments of Customer Installations for operating ranges Additionalinformation is available from the following section Air Quality page 16 Table 1 5 Typical Environments of Customer Installations Environment Operating Environment ambient Running at extremes Temp C dry bulb Relative Humidity Dew point Rate of Chg C hr should consider N densi 3 oye F oncondensing max max upgrading the facility ji F hr max Controlled Computer 18 to 27 20 to 80 17 5 Room 65 to 81 41 Office 5 to 35 8 to 85 28 NA 41 to 95 Home 5 to 35 8 to 85 28 NA 41 to 95 Light Industrial 5 to 40 8 to 90 28 NA including closets 41 to 104 Portable Mobile 5 to 40 8 to 90 28 NA 41 to 104 Special or Contract Product specifications controlled by contract or other requirements Space Requirements 27 1 The maximum elevation for all operating environmental classes is 3 050 m 10 007 ft 2 Dry bulb temperature is the regular ambient temperature Derate maximum dry bulb temperature 1 C 300 m 34 F 984 ft above 900 m 2 953 ft 3 Must be noncondensing environment 4 Controlled computer room environment is comparable to ASHRAE Class 1 and IEC 60721
31. elines air distribution system 22 circuit breaker size 11 computer equipment grounds 13 computer room safety fire protection 10 fire suppression 10 dust and pollution control 20 electrical conduit ground 13 grounding systems 13 lighting requirements 10 main building electrical ground 13 power distribution safety grounding 13 power panel grounds 13 power quality 11 sources of electrical disturbances 11 system installation guidelines 15 electrical load requirements 11 environmental elements 18 acoustics 25 air conditioning equipment requirements 21 air conditioning recommendations 22 air distribution systems 22 computer room considerations 19 cooling requirements 21 dust and pollution control 20 electrostatic discharge prevention 24 humidity level 24 static protection measures 24 equipment grounding 15 orientation 18 ESD prevention 18 example installation schedule 32 F facility characteristics 25 facility guidelines characteristics 25 floor loading terms 25 floor plan grid 28 operational space requirements 27 typical raised floor site 26 windows 27 fire protection 10 fire suppression 10 floor loading raised floor 26 terms 25 floor plan grid 28 G grounding systems 13 electrical conduit ground 13 H humidity level 24 installation schedule 32 L lighting requirements 11 M main building electrical ground 13 metallic particulate contamination 21 P
32. ence would indicate HP recommends building this consideration into your designs for floor coverings humidity control airflow dust control and personnel traffic Consider the following precautions to prevent or minimize ESD e Use antistatic flooring e Maintain humidity at 40 55 relative humidity e Follow airflow recommendations e If raised flooring is present use a 2 foot by 2 foot 61 cm by 61 cm grounding grid e Always use appropriately sized AC power ground wires e Limit personnel traffic to two floor tiles away from equipment Cellular Telephone and Wireless Usage HP recommends not using cell phones within a data center especially within 9 8 feet 3 m of any high availability equipment Comprehensive Discussion The following environmental elements can affect a product installation 18 General Site Preparation Guidelines Computer room preparation Airflow Cooling requirements Humidity level ESD prevention Acoustics Computer Room Preparation Consider the following guidelines to prepare a computer room for a product Airflow Locate the computer room away from the exterior walls of the building to avoid the heat gain from windows and exterior wall surfaces When exterior windows are unavoidable use windows that are double or triple glazed and shaded to prevent direct sunlight from entering the computer room For more information see the section titled Windows page 27 Maintain the computer
33. eneral Site Preparation Guidelines 60SP018A 12 7 99 Figure 1 14 Delivery Survey Part 2 ELEVATOR Fill in the following information if an elevator is required to move equipment Capacity Ib or kg Depth Height Width STAIRS Please list number of flights and stairway dimensions Number of flights Number of flights Width Width Width Width Width Width 60SP019A 11 24 99 Delivery Survey 37 38 2 Support and other resources Contacting HP Before you contact HP Be sure to have the following information available before you call contact HP e Technical support registration number if applicable e Product serial number e Product model name and number e Product identification number e Applicable error message e Add on boards or hardware e Third party hardware or software e Operating system type and revision level HP contact information For the name of the nearest HP authorized reseller e Inthe United States see the HP US service locator webpage http welcome hp com country us en wwcontact html e In other locations see the Contact HP worldwide in English webpage http welcome hp com country us en w wcontact html For HP technical support e Inthe United States for contact options see the Contact HP United States webpage http welcome hp com country us en contact us html To contact HP by phone Call 1 800 HP INV ENT 1 800 474
34. ently make its way out Microclimates are difficult to detect and prove therefore prevent microclimates by encouraging a high rate of airflow from source to intake of HVAC and uniform distribution of the heated air Underflow blockages such as cabling and piping can disrupt the airflow predictability Improperly positioned floor vent tiles or equipment can create air dams and decrease airflow HP recommends the addition of an Automatic Overtemperature Warning and Shutdown mechanism to protect all products located in a controlled computer room At the product level there are no industry wide mechanisms currently available to consistently protect systems such as mass storage in the event of overtemperature and shutdown Servers have had this feature The same protection is needed to all peripherals located in the controlled computer room to ensure a more efficient recovery Follow these precautions to ensure proper airflow e Use a heat load to 80 of total HVAC capacity to maintain a thermal safety margin e Place vented floor tiles only in heat load areas e Do not place vented floor tiles within two floor tiles of HVAC thermal short circuit e Do not place heat loads closer than two floor tiles of HVAC e Be sure the maximum distance from the HVAC to the heat load is less than 75 feet 23 m e Seal all cable openings as unsealed openings create a loss of static air pressure e Lay out equipment aisles parallel to airflow not perpendicular
35. equipment Equipment might develop internal hot spots resulting in sluggish performance or even system failure Rather than designing a layout to maximize a planning grid worksheet whitespace create hot and cold aisles In a hot aisle equipment is oriented so that exhaust vents face other exhaust vents In a cold aisle intake vents face other intake vents Place vent tiles in the cold aisles with few to no vent tiles in the hot aisle Position equipment in parallel to encourage the lowest air resistance and turbulence Consider the following when determining equipment orientation e Orient equipment in parallel to airflow e Place cabling in such a way as to aid airflow rather than impede it e Arrange equipment to form hot and cold aisles e Use vent tiles to control airflow in heat load areas e Place vent tiles in cold aisles e Place higher heat load devices at floor level Electrostatic Discharge ESD Source of Greatest Failure Rate Without Detection Computer equipment is increasing in processor and memory density even as size continues to decrease These smaller more densely packed pieces of equipment are at greater risk to damage from electrostatic discharge ESD created by the human body can be any voltage from zero some voltages beginning at twenty five volts 25V ESD that is felt by the human body can be 3 000 volts Contemporary electronic technology can be damaged or upset by voltages far lower than the human experi
36. ffectiveness Facility Characteristics This section contains information about facility characteristics to consider when preparing the site for the installation and operation of the product Facility characteristics are e Floor loading e Windows Floor Loading The computer room floor must be able to support the combined weight of the installed product plus the weight of the individual cabinets cabling and peripheral devices See the following table for descriptions of terms used to configure a data center s floor plan Floor Loading Terms Table 1 3 Floor Loading Term Definitions Term Definition Dead load The weight of the raised panel floor system including the understructure expressed in lb ft kg m Live load The load that the floor system can safely support expressed in lb ft kg m Concentrated load The load that a floor panel can support on a 1 in 6 45 cm area at the panel s weakest point typically the center of the panel without the surface of the panel deflecting more than a specified amount Ultimate load The maximum load per floor panel that the floor system can support without failure Failure is defined by floor panels breaking or bending Ultimate load is usually stated as load per floor panel Rolling load The load a floor panel can support without failure when a wheel of specified diameter and width is rolled across the panel Average floor load Computed by dividing tot
37. formation about installation practices and highlights some common installation hazards It addresses both power and data communications cable installations and highlights installation Electrical Factors 15 2 NOTE Indomestic installations install approved receptacles before the HP equipment arrives See the appropriate installation guide for installation procedures Acclimatization we IMPORTANT After removal of shipping material HP recommends allowing the thermal mass of the product to equalize to the temperature and humidity of the installation facility A minimum of 10 C 50 F to one hour of temperature difference between the shipping receiving facility and installation facility is required The physical size of the product determines the time period required to acclimate to the surrounding controlled computer room For example A 2m cabinet populated with racked equipment or a large preconfigured server system may require an overnight period The temperature of a small desktop printer would equalize sooner at the 10 C 50 F per one hour rate Wiring Connections Expansion and contraction rates vary among different metals Therefore the integrity of an electrical connection depends on the restraining force applied Connections that are too tight compress or deform the hardware and cause it to weaken This usually leads to high impedance preventing circuit breakers from tripping when needed High impedance can
38. ge The best operating margin is in the middle of this range but your business needs will dictate the risk you can withstand Although utility fed AC power is usually error free your particular building or area might be subject to local problems Use uninterruptible power supplies UPSs backup generators auto transfer devices floor mounted distribution transformers less than 75 foot distances and other alternatives for critical systems and applications demanding high availability To ensure sufficient power quality keep in mind The best voltage operating margin is in the middle of the distribution range e High availability equipment should have UPS sourcing and dedicated breakers e A few large UPSs provide more protection than numerous smaller cabinet UPSs UPS Recommendations Use online versus offline UPSs for the highest availability environment HP does not recommend the practice of sourcing a cabinet UPS from a room UPS as this can result in increased costs without providing more system availability Indeed this practice can introduce more system downtime than just a room level or system level UPS UPSs that are compatible with present day technology generally use pulse width modulation PWM and have ratings that are appropriate for a nonlinear load UPS loading is based on type and manufacture e Selective Catalytic Reduction SCR based should be no greater than 80 e Transistorized based at 100 Power Consumption
39. inant Gas Levels Maximum Group A contaminant gas levels in customer environments for class G1 in Table 3 of ISA 71 04 Contaminant Gas Maximum Parts per Billion ppb HS 3 SO SO 10 Ch 1 NO 50 These values have been included for convenience and reflect the gas concentration levels in Table 3 of ISA 71 04 The complete ISA document is available through the ISA website at http www isa org Be aware when reviewing air quality that temperature and relative humidity can be a factor in corrosive issues Metallic Particulate Contamination Metallic particles can be especially harmful around electronic equipment This type of contamination can enter the data center environment from a variety of sources including but not limited to raised floor tiles worn air conditioning parts heating ducts rotor brushes in vacuum cleaners or printer component wear Because metallic particles conduct electricity they have an increased potential for creating short circuits in electronic equipment This problem is exaggerated by the development of more dense circuitry of electronic equipment Over time very fine whiskers of pure metal can form on electroplated zinc cadmium or tin surfaces If these whiskers are disturbed they can break off and become airborne possibly causing failures or operational interruptions For more than 50 years the electronics industry has been aware of the relatively rare but possible threat posed
40. its LAETI ree keke ek keke ke 12 building Distribution s l er d k lek b ke kirl EE D E E E ORDEN RSV EN M MERE 13 Grounding DY ici P X 13 Power Distribution Safety Grounding BAELJ a tenente ter rrr tendere teni 13 Mais Building Electrical Ground iiio qu Gea etas kr EE pide Co keke kwe aa he Ue e e ka ke Wien de 13 Electrical Conduits Ground d s rr kaka eve shew Keke kan see WE r va vsus bee bel wa le a gu eee MR denteas 13 Power Panel Ground Kura welt eter vietata eode cueeee eb vta re voee ox aedes da wek es xey eue us 13 Comp ter Safety GIOUDO oed peel etatis ism y dle Kan e kek fub a ken eee acy 13 Dual Power Source Grounding t5 J dudaket selek kenl kik ERM ops bank ee oaa Uu eaa es vete det Kek burn 14 Cabinet Performance Grounding High Frequency Intercabinet Ground 14 Raised Floor High Frequency Noise rounding seien rto eue Leda ke keke 14 Equipment Grounding Implementation DetailS RE PEE ERU P EET Re eH OPER 15 System Installation Guidelines iere esce erede e Y neee tt Rai P apres aba 15 AcclimatizatiQrits d DM N DM DD DD JJJ ER oS Ete ONERE PNE ER E RE ERR a SN NT 16 Wine C ODTIOCH ONS esce bep nel cb utet wies aere Bo NE neva it D de uev i H de bU E GUS 16 Data Communications L ables eni Ra eee hene nhe sei ansia east sse ATE 16 Environmental Eleirients iy Kw av seye Vax rt
41. lectrical and air conditioning efficiency to ensure higher reliability to meet business needs 16 General Site Preparation Guidelines we Airflow HP equipment will operate in a broad environment within a Controlled Computer room Temperature can range from 18 27 C 64 40 80 60 F and humidity can range between 20 80 relative humidity rh Use a Best Practice to gain the highest reliability by ensuring the temperature is 20 25 C 68 77 F and humidity range of 40 50 rh IMPORTANT Itis very important to ensure consistency in temperature and humidity variables for best results Ensure there are no more than 5 C 41 F change in temperature per hour HP temperature and humidity recommendations follow ISA G12 and ASHRAE established industry standards in the following operating ranges e Temperature of 20 25 C 68 77 F e Humidity of 40 55 relative humidity e Filtration at 35 55 spot efficiency per American Society of Heating Refrigerating and Air Conditioning Engineers ASHRAE e Air conditioning heat load limits at 80 of total heating ventilation and air conditioning HVAC capacity A public misperception exists that cool ambient air is consistent throughout a datacenter That is if the temperature of the room is measured at 20 C 68 F then the equipment should be stable In reality microclimates can exist in various parts of the room such that generated heat in the equipment might not effici
42. nt They protect the wiring from accidental damage and also provide a heat sink for the wires The following types are acceptable e Electrical metallic tubing EMT thin wall tubing e Rigid metal conduit e Liquidtight with RFI shield grounded most commonly used under raised floors e Armored 12 General Site Preparation Guidelines Building Distribution Place building feeders and branch circuitry in rigid metallic conduits with proper connectors to provide ground continuity Ensure that all conduits that are exposed and subject to damage are constructed of rigid galvanized steel Grounding Systems HP systems are tested and certified only with grounding systems in which a neutral return path and a protective earth are separate conductors without any inserted impedances Additionally protective earth and return neutral are shorted together at the XO bonding junction on the secondary side of the newly derived power source IT Power System HP products have not been evaluated for connection to an IT power system an AC distribution system having no direct connection to earth according to IEC 60950 A product requires two methods of grounding e Power distribution safety e High frequency intercabinet Power Distribution Safety Grounding LAHJ ET The power distribution safety grounding system connects various points in the power distribution system to earth ground using green green yellow wire ground conductors To p
43. of a specific product G1 environments and HP s controlled computer room are parallels This guide does not replace vendor printed Product Specifications but generalizes to a room level ET NOTE See the specific product service guide for the guidelines required to support the specific product The following information provides general principles and practices to consider before installing or operating the system These guidelines apply to all customer environments that an HP product is likely to be installed in e Controlled computer room e Controlled office e Uncontrolled office home e Light industrial e Mobile portable However the implementation of these guidelines will vary from customer to customer and from one environment to another Information provided through this guide is designed to make the user aware of the following e Product specifications from the manufacturer have overall priority and cannot be changed The HP Generic Site Preparation Guide will not replace the product specifications e Third 3rd Party specifications will not replace the product specifications some 3rd Party sources are known to contain errors e Higher room temperatures are discretionary but business risks will increase Electrical Factors Synopsis AC Electrical Distribution System HP recommends use of an electrical distribution system that exceeds normal electrical guidelines This recommendation is based on experiences with
44. ommended clearances 3 Is access to the site or computer room restricted 4 Is the computer room structurally complete Expected date of completion 5 Is a raised floor installed and in good condition Sample Site Inspection Checklist 33 34 Table 1 8 Site Inspection Checklist continued Check either Yes or No If No include comment number or date Comment or Date 6 Is the raised floor adequate for equipment loading 7 Are channels or cutouts available for cable routing 8 Is 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 Is floor tile underside shiny or painted If painted judge the need for particulate test Power and Lighting Number Area or Condition Yes No 13 Are lighting levels adequate for maintenance 14 Are AC outlets available for servicing needs for example laptop 15 Does the input voltage correspond to equipment specifications 15a Is dual source power used If so identify types and evaluate grounding 16 Does the input frequency correspond to equipment specifications 17 Are lightning arrestors installed inside the building 18 Is power conditioning equipment installed 19 Is a dedicated br
45. onded to the building or site ground e Best Add a grounding grid to the subfloor Build the grounding grid with copper strips mounted to the subfloor Use strips that are 0 032 inches 0 08 cm thick and a minimum of 3 0 inches 8 0 cm wide Connect each pedestal to four 4 strips using 1 4 inch 6 0 mm bolts tightened to the manufacturer s torque specification General Site Preparation Guidelines Figure 1 1 Raised Floor Metal Strip Ground System Floor panel Ground vy ire to power panel Grounding camp ee Band and pedestal Grounding braid to computer equipment wma Equipment Grounding Implementation Details Connect all HP equipment cabinets to the site ground grid as follows 1 Checkthatthe braid contact connection points are free of paint or other insulating material and treated with a contact enhancement compound similar to Burndy Penetrox 2 Check that the braid contact on each end of the ground strap consists of a terminal and connection hardware a 1 4 inch 6 0 mm bolt nuts and washers 3 Attach one end of each ground strap to the applicable cabinet ground lug 4 Attach the other end to the nearest pedestal base raised floor or cable trough ground point nonraised floor 5 After achieving a safe and effective 50 60Hz grounding system and a safe and effective SRG then consider cabinet to floor grounding HP does not require this step System Installation Guidelines This section contains in
46. onform to the air conditioning equipment manufacturer s recommendations Air Conditioning Ducts Ensure that the air conditioning duct work in the computer room is separate from the duct work used for the rest of the building If the computer room duct work 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 Also do not expose the ducts to warm air or humidity levels might increase Humidity Level The recommended humidity level is between 4076 and 5576 relative humidity RH High humidity causes galvanic actions to occur between some dissimilar metals This eventually causes a high Environmental Elements 23 resistance between connections leading to equipment failures High humidity can also have an adverse affect on some magnetic tapes and paper media CAUTION Low humidity contributes to undesirably high levels of electrostatic charges This increases the electrostatic discharge ESD voltage potential ESD can cause component damage during servicing operations Paper feed problems on high speed printers are usually encountered in low humidity environments Low humidity levels are often the result of the facility heating system and occ
47. ons e Lightning arresters on power cables to protect equipment against electrical storms Precautions are taken during power distribution system design to provide immunity to power outages of less than one cycle However testing cannot conclusively rule out loss of service Adherence to the following guidelines provides the best possible performance of power distribution systems for HP computer equipment e Dedicated power source Isolates a product power distribution system from other circuits in the facility e Missing phase and low voltage detectors Shut equipment down automatically when a severe power disruption occurs For peripheral equipment these devices are recommended but optional e Online UPS Keeps input voltage to devices constant and should be considered if outages of one half cycle or more are common Refer to qualified contractors or consultants for each situation Distribution Hardware This section describes wire selection and the types of raceways electrical conduits used in the distribution system Wire Selection Use copper conductors instead of aluminum conductors Aluminum s coefficient of expansion differs significantly from that of other metals used in power hardware Because of this difference aluminum conductors can cause connector hardware to work loose overheat and fail Raceway Systems Electrical Conduits LAHJ Raceways form part of the protective ground path for personnel and equipme
48. panel s ground buses and transformers XO bond that are in close proximity to the computer equipment to the site grounding grid Methods of achieving a sufficiently high frequency ground grid are described in the next sections Raised Floor High Frequency Noise Grounding 14 we If you use a raised floor system install a complete SRG to maintain equal potential over a broad band of frequencies Connect the grid to the equipment cabinet and electrical service entrance ground at multiple connection points by using a minimum 6 AWG 16 mm wire ground conductor Figure 1 1 page 15 illustrates a metallic strip grounding system IMPORTANT Regardless of the grounding connection method used you must ground the raised floor as an absolute safety minimum HP recommends the following approaches to create an effective and safe 2 foot by 2 foot signal reference grid e Good Usethe raised floor structure as a ground grid In this case the floor must be designed as a ground grid with bolted down stringers and corrosion resistant plating to provide low resistance and attachment points for connection to service entrance ground and HP computer equipment The use of conductive floor tiles with this style of grid further enhances ground performance The structure needs to be mechanically bonded to a known good ground point e Better Add a grounded 6 AWG 16mm minimum copper wire grid mechanically clamped to floor pedestals and properly b
49. ply air emitted though the perforated floor panels is then available near the cooling air intake vents of the product cabinets 2 CPRA Supply air is ducted into the ceiling plenum from upflow air conditioning equipment located in the computer room or from an air handling unit remote The ceiling construction should resist air leakage Place perforated ceiling panels with down discharge airflow characteristics around the front of the system cabinets The supply air emitted downward from the perforated ceiling panels is then available near the cooling air intake vents of the product cabinets Direct the return air back to the air conditioning equipment though the return air duct above the ceiling 3 Above ceiling ducted air distribution system Supply air is ducted into a ceiling diffuser system from upflow air conditioning equipment located in the computer room or from an air handling unit remote Return air from an above ceiling ducted air distribution system can be DRA above the ceiling or CPRA Adjust the supply air diffuser system grilles to direct the cooling air downward around the front of the product cabinets The supply air is then available near the cooling air intake vents of the product cabinets Air Conditioning System Installation All air conditioning equipment materials and installation must comply with applicable construction codes Installation of the various components of the air conditioning system must also c
50. r Cord Male End of Power Cable The male plug on the other end of the power cable will vary depending on the region the HP product ships Figure 1 4 Unterminated Plug Power Plug Configuration 29 Figure 1 5 L6 20 Plug Figure 1 6 IEC 309 Plug Figure 1 7 CEE 7 7 Plug Figure 1 8 L6 30 Plug Figure 1 9 NEMA 5 20P Plug left and receptacle right 30 General Site Preparation Guidelines Figure 1 10 ISI 32 Plug Figure 1 11 GB 1002 Plug Power Cable The power cable length and configuration varies based on the region the product ships to Figure 1 12 page 31 provides an example of one power cable configuration used to supply power to the product Figure 1 12 L6 20 Power Cable Conversion Factors and Formulas The conversion factors provided in this section are intended to ease data calculation when planning for systems that do not conform specifically to the configurations listed in this 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 calculations required for site planning Conversion Factors and Formulas 31 Conversion Factors e Refrigeration 1 watt 0 86 kcal hour 1 watt 3 412 Btu hour 1 watt 2 843 x 10 4 tons 1ton 200 Btu minute 1ton 12 000 Btu hour 1ton 3 517 2 watts e Metric Equivalents 1 centimeter 0 3937 inch 1 meter 328 foot
51. reliability of surrounding equipment e Locate printers and paper products in a separate room to eliminate paper particulate problems e Establish ano eating or drinking policy Spilled liquids can cause short circuits in equipment such as keyboards e Use a dust absorbent cloth mop rather than a dry mop to clean tile floors e Use only HP approved cleaners IMPORTANT Air quality must meet the following quality standards Gaseous contamination must not exceed G1 mild levels of Group A chemicals at any time For more information see Table 1 1 page 21 In addition to dust and microscopic particles chemical contaminants in the air can also damage electronics Chemical contaminant levels in customer environments for HP hardware products must not exceed G1 mild levels of Group A chemicals at any time as described in the current version of ISA 71 04 Environmental Conditions for Process Measurement and Control Systems Airborne Contaminants General Site Preparation Guidelines See http www isa org for more information If the environment does not meet G1 levels third party experts in remediation should be engaged to help bring the site into compliance This work will include verifying contaminant levels and sources as well as determining the most effective remediation techniques Those may include filtration and abatement of the environment by qualified professionals to remove the contaminants Table 1 1 Maximum Contam
52. rength e Airflow considerations e Cabling restrictions Seismic or earthquake resistance can also be an important attribute in certain parts of the world Cabinet blanking panels must be used in non populated U space levels to prevent unpredictable air mixing This can lead to a No Trouble Found NTF diagnosis Use the highest percentage cabinet perforation possible to allow the proper ventilation in the cabinet All cabinet doors must be used in the front and the rear They must be grounded to the cabinet using existing ground lugs and ground straps or grounding cables General Site Preparation Guidelines Working Space for Product Access The recommended working space for performing maintenance is 3 feet 0 9144 m from vendor instructed working area 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 product will be at the front the side or the rear of the product If no side service is needed ensure that there is 3 feet clearance in the front or in the rear Power Consumption ET Power consumption can be divided into two broad categories e 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 e Typical consumption which is measured under norm
53. room at a positive pressure relative to surrounding spaces Use a vapor barrier installed around the entire computer room envelope to restrain moisture migration Caulk and vapor seal all pipes and cables that penetrate the envelope Use a raised floor system at least 18 inches 45 72 cm high for the minimum favorable room air distribution to ensure good static air pressure beneath the flooring under floor distribution Ensure a minimum clearance of 12 inches 30 48 cm between the top of the product cabinet and the ceiling to allow for return airflow and to ensure that all ceiling tiles are in place except where fire sprinkler heads call for greater clearance Allow 18 inches 45 72 cm or local code minimum clearance from the top of any device product cabinet cable trays to the fire sprinkler heads Ensure that separate hot and cold aisles are parallel to airflow patterns This recommendation causes cooling air to be released into cold aisles where opposing rows have intake grills oriented Ensure that opposing row exhaust grills face each other without cooling air A parallel orientation encourages low impedance airflow back to the HVAC Route cables underneath the floor to be parallel to the airflow to prevent airdams if raised flooring is used Keep air throws from HVAC equipment to the heat loads they serve within 75 feet 22 86 m of each other Row Orientation Row orientation has an impact on the airflow temperatur
54. rotect computer room personnel against shock hazards from current leakage and fault conditions tie the ground connections to metal chassis parts Power distribution systems consist of several parts that should be solidly interconnected to provide an equipotential ground to all points Main Building Electrical Ground The main electrical service entrance equipment must have an earth ground connection as required by applicable codes Such connections as a grounding rod or building steel provide an earth ground Electrical Conduit Ground Allelectrical conduits must be made of rigid metallic conduit that is securely connected together or bonded to panels and electrical boxes so as to provide a continuous grounding system Power Panel Ground Ground each power panel to the electrical service entrance with green green yellow wire ground conductors Size the green green yellow wire ground conductors per applicable codes based on circuit over current device ratings The PE Protective Earth wire gauge may be a larger diameter wire but not a smaller diameter wire than the AC input power distribution wire NOTE The green wire ground conductor mentioned above can be a black wire with green tape LAHJ Computer Safety Ground Ground all computer equipment with the green green yellow wire included in the branch circuitry Connect the green green yellow wire ground conductors to the appropriate power panel and size them per applicable co
55. rs and cause short life cycles in mechanical parts Prevent small dust particles from entering the computer room by maintaining the air conditioning system at a high static air pressure level Other sources of dust metallic conductive abrasive and microscopic particles can be present Some sources of these particulates are e Subfloor shedding e Raised floor shedding e Ceiling tile shedding These particulates are not always visible to the naked eye One method to determine their possible presence is to inspect the underside of the tiles For more information see Metallic Particulate Contamination page 21 There are two types of flooring a galvanized shiny hot dipped least susceptible for whiskers b painted dull electroplating most susceptible for whiskers Another Best Practice to control dust and particulates is with the use of sticky mats adhesive coated mats at doorway entrances to the computer room In the majority of environments there is more particulate matter on the feet than anywhere else including air exchange Popular brands have multiple layers that allow the top layer to be peeled off for disposal prior to losing all adhesive properties This provides the next fresh sheet to be exposed to continue effective capture of particulate matter Keep the computer room clean by following these guidelines e Establish a no smoking policy Particulates of cigarette smoke will not improve the operation or
56. s e Fire and temperature alarms e Fire extinguishing system e Air Handling Plenum space that is segmented from the remainder of the building Additional safety devices are e Circuit breakers e Anemergency power cutoff switch located at the computer room exit door e Devices specific to the geographic location such as earthquake protection 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 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 10 Use third party cabinets whose product designs have been carefully considered with the following attributes e St
57. s Inc Above sea level A printed circuit assembly PCA Also called a card or adapter British thermal unit The amount of heat required to raise one pound of water 1 F in an hour a common measure of heat transfer rate Cubic feet per minute commonly used to measure the rate of air flow in an air conditioning system A type of air conditioning system that has no refrigerant in the unit itself The refrigerant is contained in a chiller which is located remotely The chiller cools water and is piped to the air conditioner to cool the space The newest specification for PCI based industrial computers is called CompactPCI It is electrically a superset of desktop PCI with a different physical form factor See http www picmg org v2internal compactpci htm for details Hardware devices that are connected one to another in series The process of removing moisture from the air To lower the rated capability of an electrical or mechanical apparatus Refers to a type of air conditioning system that discharges air downward directly beneath a raised floor It is commonly found in computer rooms and modern office spaces The Electronic Industries Association EIA defines this unit of measurement to be 1 75 inches in height For example 1 U equals 1 75 in 1 U equals 44 45 mm Electrostatic discharge The process of adding moisture to the air within a critical space The peak current flowing into a power supply the instant AC power i
58. s ui dass om torrente loti doen eo le step sep eti tuta d ot ee dad vage 22 Air Conditioning Systeri Types oce b erp CD Lo Pvt RUP et Ere EME KELE DL n ke 22 pasic Air Distribution Sy Stems ris scere Ua patei aep ed iis P iaee oa UU da aeu i edu 22 Air Conditioning System InstallatiOtis est vete taber rep ri Pto RI Wet eR EYE RUE 23 Air Conditioning IUOS oed cei eee edu aident Rh Me aec Gres 23 H midity Eevela due itii dase er erbe tele be Se tea a dat as wn EE URN ER VER NEN Q Re van EE qe awed a 23 ESDP Preyenton xe Neve vitse a bec tee aote See toe E Se RU See eb oe ee Eo TUE 24 Humidity Levels Influence the Creation of Static Charges E EEE erkeke ee 24 Relative FAUT LEV 54 455 54 4525455555045525 rw Sehr nre oco ndo n eon ru p ru nd o ae ne See 24 Static Protection Meas res reet tecto iS eee ertt less te ee cei ee k tuere desit ede et te xe one bar e 24 A COUSUGSS e I TT 25 Facility Cliaractetislics onec aesti etum sta tede vni a Ira er VEKIR Ea E Laa GK k ka EE d conte DU ds 2b g eo uaa a Fal hal saan estet eed utu tu rt VE Ee E d k REI b rek VER E e tpe eA DUM 2b Floor Loading TEPS oce eiie erst he tue ati sun erste lots ho sec dapes ig eite rt obedit 25 Raised Floor LOAD rel esed reet EHE Y AEE AEE 99YE r intor n Ere KEN KI sik INR Be c 26 Ayerage Floor Loadingnassni y edi a n me kelin k ber iet k n n aren Mr E be Eye k r tede 26 Typical Raised Floor Hear n 1
59. s applied This peak is usually much higher than the typical input current because of the charging of the input filter capacitors When switching power supplies are first turned on they present high initial currents as a result of filter capacitor impedance These large filter capacitors act like a short circuit and produce an immediate inrush surge current with a fast rise time The peak inrush current can be several orders of magnitude greater than the typical input current Kilovolt amperes 1 000 x volt amperes Local authority has jurisdiction The capability of an air conditioning system to remove heat from the air 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 41 maximum input current NEBS O R PCA PCI PICMG power factor RMS ST theoretical maximum power consumption tonnage true power typical input current typical power consumption UZ vapor seal 42 Glossary The operating current of the product equal to the maximum load divided by the minimum input voltage Network Equipment Building Standards A set of safety guidelines All electronic equipment has the potential to interfere with other electronic equipment Interference can be caused
60. sonnel enrolled in the System Administrator s Course 34 Is on site training required Delivery Survey The delivery survey forms list delivery or installation requirements If any of the items on the list apply enter the appropriate information Figure 1 13 page 36 and Figure 1 14 page 37 in the areas provided on the form Enter any special instructions or recommendations on the special instructions or recommendations form The following list gives examples of special instructions or issues Packaging restrictions at the facility such as size and weight limitations Special delivery procedures Special equipment required for installation such as tracking or hoists What time the facility is available for installation after the equipment is unloaded Special security requirements applicable to the facility such as security clearance Delivery Survey 35 36 Figure 1 13 Delivery Survey Part 1 DELIVERY CHECKLIST DOCK DELIVERY Is dock large enough for a semitrailer Yes No Circle the location of the dock and give street name if different than address North West East South STREET DELIVERY Circle the location of access door and list street name if different than address North West East South List height and width of access door List special permits if required for street delivery Permit type Agency obtained from G
61. ter and data processing equipment In general a power distribution system should exceed the requirements of most electrical codes A good design when coupled with proper installation practices produces the most trouble free operation A detailed discussion of power distribution system design and installation is beyond the scope of this guide However electrical factors relating to power distribution system design and installation must be considered during the site preparation process The following electrical factors are discussed in this section e Computer room safety Power consumption e Electrical load requirements circuit breaker sizing Power quality e Distribution hardware System installation guidelines Electrical Factors 9 Computer Room Safety WARNING The safety of personnel must be a paramount consideration when performing the following recommendations Failure to comply can create life threatening scenarios Inside the computer room fire protection and adequate lighting when servicing equipment are important safety considerations Federal and local safety codes govern computer installations Fire Protection The National Fire Protection Association s Standard for the Protection of Electronic Computer Data Processing Equipment NFPA 75 contains information on safety monitoring equipment for computer rooms Most computer rooms are equipped with the following fire protection devices e Smoke detector
62. to the electrical distribution system This grounding is crucial for personnel safety and for maximum equipment availability and use Observe the following precautions e Neutral and ground wires have specific uses Do not interchange them e Do not use conduit grounds in place of a separate grounding conductor to each receptacle e Size ground wires to be equal to the power source wires e Do not daisy chain phase neutral and ground wires e If the system is on raised flooring use a 2 foot by 2 foot 61 cm by 61 cm grounding grid Comprehensive Discussion we IMPORTANT Electrical practices and suggestions in this guide are based on North American practices For regions and areas outside North America local electrical codes take precedence over North American electrical codes For example the recommendation that the Protective Earth PE conductor be green with a yellow stripe is a European Union EU directive North American local electrical inspectors will accept a ground wire if the color is green with a yellow stripe Local authority has jurisdiction LAHJ and should make the final decision regarding adherence to region specific or area specific electrical codes and guidelines The proper design and installation of a product power distribution system requires specialized skills Those responsible for this task must have a thorough knowledge of appropriate electrical codes and the limitations of the power systems for compu
63. tration into or migration out of a critical space such as a data processing center or other room that contains sensitive electronic instrumentation Essentially a vapor seal is a barrier that prevents air moisture and contaminants from migrating through tiny cracks or pores in the walls floor and ceiling into the critical space Vapor barriers can be created using plastic film vapor retardant paint vinyl wall coverings and vinyl floor systems in combination with careful sealing of all openings doors and windows into the room watt A unit of electricity consumption representing the product of amperage and voltage When the power requirement of a product is listed in watts you can convert to amperes A by dividing the wattage by the voltage For example 1 200 W divided by 120 V equals 10 A 43 Index A acoustics 25 air conditioning ducts 23 requirements 21 system recommendations 22 air distribution system room space return air 22 airflow 17 B basic air distribution systems 22 C cell phone use 18 circuit breaker size 11 computer room preparation 19 computer room safety fire protection 10 computer system environmental elements 18 power system protection 12 sample installation schedule 32 contamination dust metallic particulates 20 conversion formulas 31 cooling requirements 21 D data communications cables 16 dust and pollution control 20 E electrical and environmental guid
64. ur during the cold season Most heating systems cause air to have a low humidity level unless the system has a built in humidifier Be aware when reviewing air quality that temperature and relative humidity can be a factor in corrosive issues ESD Prevention Static charges voltage levels are created when objects are separated or rubbed together Be aware that destructive ESD levels can exist very far below human thresholds Extreme caution must be used to protect contemporary microcircuitry that is manufactured densely and physically smaller The voltage level of a static charge is determined by the following factors e Types of materials e Relative humidity e Rate of change or separation Humidity Levels Influence the Creation of Static Charges we Table 1 2 compares the static charges generated by activities in different humidity levels IMPORTANT Use ESD processes and ESD prevention equipment whenever equipment needs servicing Table 1 2 Effect of Humidity on ESD Charge Levels Personnel Activity Humidity and Charge Levels voltages 26 32 40 50 Person walking across a linoleum floor 6 150 V 5 750 V 4 625 V 3 700 V Person walking across a carpeted floor 18 450 V 17 250 V 13 875 V 11 100 V Person getting up from a plastic chair 24 600 V 23 000 V 18 500 V 14 800 V 1 Source B A Unger Electrostatic Discharge Failures of Semiconductor Devices Bell Laboratories 1981 2 For the s
65. vais A Ken eon yk veka see vot autre Sev j on ya ewe ya Vy aw Ee pan 16 SYDOD 5185 44 tede ae Can e uae EE a Re E ik as Westnet EMI LOG Sa ea neta ya une UEBER UU Mek sa very AA UU 16 dr SUNY e rate r err be ib e e 16 PRL TEL O A METRI 17 Edtupmest Orentalionussd ue ost tuom oit a reee kis k V deke been k n de Ia atate ek 18 Electrostatic Discharge ESD Source of Greatest Failure Rate Without Detection 18 Cellular Telephone and Wireless USdbe s coiere ei iet e ero keke keke Ke kek Ke ets 18 Comprehensive DISCUSSION ou aestatis caveto Des vido tente b E k a ka Ka a watcha dun n k n D RO Tawar 18 Computer Rooi Prepatallobigs disons ede omes quar cbe bn Deu cR VR KABE E r ba eka MER VAR d 19 AUTEN OW san ya Vay aOR eae alay kay yi ya Wa Kay ade xey a Ravel eevee wk wettest 19 ROW Orientatl O D sn xa weh ne veces r Aya k ra Ak Eve EE ed E kk E Haa n a senan tad 19 Dust and Pollution CC OOO x a s l waran kan be Mir dk nev key el bey Ek bey k Er by ek n e t ye And Kaka 20 Metallic Particulate Cola lina ON y a sy yak ella esera kak k ye ka pe nhe een rhe en kak k n Kek eke ba akan 21 Table of Contents 3 Cooling Requirembernibs 34 i442 ep sea n k n eode aepo ey EN can meld sep eae tn dos di NS kn S Ren 21 Basic Air Conditioning Equipment Requirements EELL eee keke keke 21 Air Conditioning System Guideline

Download Pdf Manuals

Related Search

Related Contents

EA159PB（エアーマイクログラインダー）取扱説明書  Cables Direct USB-1191M USB cable    User manual  Kit para Detecção de Cytomegalovirus (CMV) - Cód  De'Longhi DBL650 User's Manual  

Copyright © All rights reserved. Failed to retrieve file