The document provides guidance on installing a Cray Research computer system, including positioning support equipment in designated locations, reassembling the system, and verifying startup. It outlines considerations for site selection such as power quality, air quality, cooling water quality, and vibration sources. The computer room design must address personnel safety, air quality, future equipment plans, seismic activity, and accessibility. Computer equipment requires specific temperature, humidity, and air quality ranges. The installation also requires a protective power ground system, signal reference grid, and clean cooling water supply.

1. System InstallationSystem Installation
Cray Research, Inc.Cray Research, Inc.
December 21, 2012December 21, 2012

2. Installation ProcessInstallation Process
 Ship and install support equipmentShip and install support equipment
 Position equipment in designatedPosition equipment in designated
locationslocations
 Reassemble computer systemReassemble computer system
 Verify system startup and stabilizationVerify system startup and stabilization
 Verify system on-site qualityVerify system on-site quality
 Prepare system operationsPrepare system operations

3. Site EvaluationSite Evaluation
Considerations for site selection:Considerations for site selection:
 Electrical power qualityElectrical power quality
 Air qualityAir quality
 Cooling water qualityCooling water quality
 Vibration sourcesVibration sources
 Structural strength of computer room floorStructural strength of computer room floor

4. Computer Room DesignComputer Room Design
Computer room design considers:Computer room design considers:
 Personnel safety and securityPersonnel safety and security
 Air quality and positive air pressureAir quality and positive air pressure
 Future computer equipment plansFuture computer equipment plans
 Seismic vibrationSeismic vibration
 Raised flooring capabilityRaised flooring capability
 Sound reduction and proper lightingSound reduction and proper lighting
capabilitycapability
 Handicapped personnel accessHandicapped personnel access

5. Computer Room EnvironmentComputer Room Environment
Computer equipment is designed to operateComputer equipment is designed to operate
within specific ranges of air quality,within specific ranges of air quality,
temperatures, and relative humidity levelstemperatures, and relative humidity levels
 Temperature: 60Temperature: 60 °F to 83 °F (16 °C to 28° C)°F to 83 °F (16 °C to 28° C)
 Humidity 35% to 65% relative humidityHumidity 35% to 65% relative humidity
 Dewpoint 60Dewpoint 60 °F (16 °C)°F (16 °C)
 Air quality: One fresh air change per hourAir quality: One fresh air change per hour

6. Support Equipment RoomSupport Equipment Room
EnvironmentEnvironment
Support equipment consists of motorSupport equipment consists of motor
generator units and refrigeration control unitsgenerator units and refrigeration control units
 Temperature: 65Temperature: 65 °F to 95 °F (18 °C to 35° C)°F to 95 °F (18 °C to 35° C)
 Humidity 30% to 80% relative humidityHumidity 30% to 80% relative humidity
 A clean, dirt- and dust-free environmentA clean, dirt- and dust-free environment
 Located as close as possible to computerLocated as close as possible to computer
roomroom

7. Electrical RequirementsElectrical Requirements
 Computer equipment requires a protectiveComputer equipment requires a protective
power safety-ground systempower safety-ground system
 Computer equipment requires a signalComputer equipment requires a signal
reference gridreference grid
 Customer provides and installs all powerCustomer provides and installs all power
wiring, circuit breakers, and circuit breakerwiring, circuit breakers, and circuit breaker
panelspanels

8. Dielectric-cooling SystemsDielectric-cooling Systems
 Dielectric coolant is inert liquidDielectric coolant is inert liquid
 Has insulating and non-corroding propertiesHas insulating and non-corroding properties
 Has large capacity for absorbing heat fromHas large capacity for absorbing heat from
integrated circuit modules and powerintegrated circuit modules and power
suppliessupplies

9. Cooling Water SupplyCooling Water Supply
 System requires clean, adequate source ofSystem requires clean, adequate source of
water for cooling purposeswater for cooling purposes
 Closed-loop cooling water supply isClosed-loop cooling water supply is
generally requiredgenerally required
 Open system water supply may not complyOpen system water supply may not comply
with water system requirementswith water system requirements
 Water supply temperature should range fromWater supply temperature should range from
4040 °F to 70 °F°F to 70 °F

10. Equipment Separation LimitsEquipment Separation Limits
General requirements for arranging computerGeneral requirements for arranging computer
system equipment must consider thesystem equipment must consider the
following:following:
 Personnel safetyPersonnel safety
 Maximum system performanceMaximum system performance
 Satisfactory system installationSatisfactory system installation
 Satisfactory operator and maintenanceSatisfactory operator and maintenance
accessaccess

11. Floor PreparationFloor Preparation
 Computer room floor must be raised floorComputer room floor must be raised floor
and static-dissipativeand static-dissipative
 Provides signal reference grid for computerProvides signal reference grid for computer
systemsystem
 Provides space for power cables, signalProvides space for power cables, signal
cables, coolant piping, and air flowcables, coolant piping, and air flow
 Minimum clearance of 18 inches (46 cm)Minimum clearance of 18 inches (46 cm)

12. ReferenceReference
Cray Research, Inc. (1993). SiteCray Research, Inc. (1993). Site
Planning and preparation.Planning and preparation.
Publication number HR-04036Publication number HR-04036