Review the Sales Order Customer sales order information is available through the Support Connect system and through the WWOMS (World-Wide Order Management System).
Plan the Site Visit After a careful review of the sales order, a Hewlett-Packard Site Preparation Specialist will make arrangements for a preliminary on-site meeting. The purpose of this meeting will be to discuss the site planning and preparation needs including electrical, mechanical, and physical system requirements. Ideally, this meeting should be scheduled at least 60 days prior to the solution delivery date for the equipment (see Develop the Schedule).
the Site Planning Team (see Review Customer Responsibilities).
Visit the Site During the preliminary site visit, it is important that the Hewlett-Packard Site Preparation Specialist and the customer representative accomplish the following major tasks: 5
Verify system complicity with regulatory standards The following checklist should be filled out during the preliminary site visit to ensure regulatory standards are met and that any site deficiencies are identified: Table 2 Computer room No. Area or condition 1. Is there a copy of the completed floor plan? 2. Is there adequate space for maintenance needs? 3. Is access to the site or computer room restricted? 4. Is the computer room structurally complete? 5. Is a raised floor installed? 6.
Table 2 15. Does the input voltage correspond to equipment specifications? 16 Does the input frequency correspond to equipment specifications? 17. Are lightning arrestors installed? 18. Is power conditioning equipment installed? No. Area or condition 19. Is there a dedicated branch circuit for equipment? 20. Is the dedicated branch circuit less than 250 feet (72.5 meters)? 21. Are the input circuit breakers adequate for equipment loads? Yes No Yes No Yes No Safety No.
Table 2 Storage No. Area or condition 32. Are cabinets available for tape and disc media? 33. Is shelving available for documentation? Yes No Yes No Training No. Area or condition 33. Are personnel enrolled in the System Administrator’s Course? 34.
Develop the Schedule The following schedule lists the sequence of events for an ideal system installation.
Specify Hard Floor Requirements A cable trough may be required when an rp7400 system is installed in a computer room that does not have a raised floor. The power drops and interface cables from the SPU are routed down through the cable guides and into the cable trough. The cable trough connects to the bottom of a power panel.
from the SPU and peripheral cabinets.
Specify Power Protection The only supported HP PowerTrust UPSs are the 3.0kVA and 5.5kVA models. These UPSs can provide power protection to a single rp7400 SPU. Recommendations for other manufacturers and models are not yet determined. HP rp7400 server power supplies may be plugged directly into the customer’s site UPS. However, customers are advised against plugging the power supply into an HP PowerTrust UPS and then connecting that UPS to the site UPS.
Specify the System Requirements System Electrical Specifications Table 3 Description Specification AC Input Voltage Rangea 200 to 240 VAC AC Input Line frequency 50 to 60 Hz AC Input Current 18 A (max load at 200 VAC)12 A (max load at 240 VAC) AC Inrush Current TBD AC Input Power 1250 VA maximum Power Supply Output Rating 1163 watts DC continuous Holdup without system reset 25ms at 50/60Hz (1 cycle, or 500ms) Battery Backup Time 15 minutes With optional external PowerTrust UPS.
Determine the ESD Requirements Static charges (voltage levels) occur when objects are separated or rubbed together. The voltage level of a static charge is determined by the following factors: • Types of materials • Relative humidity • Rate of change or separation Effect of humidity on ESD charge levels The table following lists charge levels based on personnel activities and humidity levels.
laying tiles). • Use conductive wax if waxed floors are necessary. • Ensure that all equipment and flooring are properly grounded and are at the same ground potential. • Use conductive tables and chairs. • Use a grounded wrist strap (or other grounding method) when handling circuit boards. • Store spare electronic modules in antistatic containers.
Determine RFI Requirements Table 5 Description Specification Radiated Field Immunity 10 Volts/Meter (14KHz to 1 GHz) Magnetic Field Immunity 1 Gauss (47.
Review Local Codes Special local codes exist in some locations regulating the installation of computer equipment. The customer is responsible for making sure their computer system installation is in compliance with all local laws, regulations, and codes for mechanical, building, and electrical distribution systems prior to system installation. The Hewlett-Packard Site Preparation Specialist can assist in determining your local regulations.
Determine Altitude Requirements Maximum Altitude Operational 3000 meters above sea level Non-operational 4500 meters above sea level Effects of Altitude Some old models of tape drives, including those supplied by Hewlett-Packard, have vacuum column transport mechanisms that are affected by atmospheric pressure. Adjustments to these mechanisms may be required to compensate for the lower atmospheric pressure at higher altitudes.
Determine Fire Protection Requirements When considering fire safety, the customers insurance carrier should be consulted for suggestions and recommendations as to the adequacy of existing or proposed fire control systems. If a new site is to be built or an existing structure modified, consult local building codes for fire prevention and protection. Also, consult with the Hewlett-Packard Site Preparation Specialist and local fire inspector for additional information.
Define E-Stop Requirements The computer system power panel should include a shunt-trip wired to an emergency shut-off switch and a thermostat device. Electrical codes commonly stipulate that this button will remove both power AND airflow from the computer room. This is for deactivating all equipment power in case of an emergency or in case room temperature exceeds safe operating conditions. Check the local electrical codes to see whether the E-stop switch is optional or required.
Determine Other Needs Special Tools If an rp7400 server is being added or installed in the top of a cabinet, a step ladder and a Genie® Load Lifter will be required. Telephone You should plan to install a telephone with a long cord near your computer system to expedite consultations with Hewlett-Packard Sales Representatives, CEs, AEs, and Response Center personnel. Additional phone lines, appropriately placed, should be planned if a remote support modem is to be installed with your computer system.
Lighting 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, it is difficult to see cable connection points on the hardware if there is not enough light. Adequate lighting reduces the chances of connector damage when cables are installed or removed.
Generate the Plan Design computer room layout Software is now commercially available to aid in planning and laying out space and location requirements for computer room equipment. Large computer installations will find such software particularly useful in managing the equipment relocation and new equipment installations over time. Computer room space planning can also be performed using scaled templates and cutouts.
Execute the Site Plan To ensure site preparation is complete by the scheduled equipment delivery date, the customer should arrange for contractors as soon as the plan has been laid out and computer room requirements are determined. All major facility changes and primary power and air conditioning installation should be completed 30 days prior to the scheduled installation date. The Hewlett-Packard site preparation specialist may assist in arranging for the necessary contractors if requested by the customer.
Review Customer Responsibilities The customer is responsible for scheduling, planning, and preparing a suitable environment for the installation and operation of a complete computer system. The Hewlett-Packard Site Preparation Specialist will be available to assist you throughout the planning and preparation for and the installation of your system. Carefully read the Site Planning and Warranty Information provided with your system.
Local Codes Special local codes exist in some locations regulating the installation of computer equipment. The customer is responsible for making sure their computer system installation is in compliance with all local laws, regulations, and codes for mechanical, building, and electrical distribution systems prior to system installation. The Hewlett-Packard Site Preparation Specialist can assist you in determining your local regulations.
• Coordinating construction efforts • Primary liaison with Hewlett-Packard representatives Principal Operator The Principal Operator is responsible for the following tasks: • System operation • Monitoring site preparation • Ordering computer supplies • Scheduling user training • Maintaining maintenance schedules Site Planning Team The Site Planning Team is responsible for the following tasks: • Determining site location and size • Reviewing construction requirements • Reviewing local codes • Reviewing insur
Review HP Responsibilities The following paragraphs outline Hewlett-Packard’s site planning and verification services. Site Planning Visit Upon receipt of a purchase order, a Hewlett-Packard Site Preparation Specialist will make arrangements for an on-site meeting with your principal operator and electrician. As a part of this on-site meeting, the Site Preparation Specialist will discuss site planning and preparation needs including electrical, mechanical, and physical system requirements.
Specify the Space for Unpacking Specify Uncrating Space HP rp7400 Systems are shipped in integrated cabinets on a 40in. x 48in. pallet. The combined height of the packaged container and the pallets are as follows: • 1.1 meter rack - 60in. • 1.6 meter rack - 73in. • 2.0 meter rack - 87in. Allow a circular area approximately 12ft. in diameter room for uncrating the system and rolling the cabinet off the pallet on rails.
Specify Raised Floor Requirements If a raised floor system is used, a complete grounding grid for maintaining equal potential over a broad band of frequencies should be installed. The grounding grid should be connected to the equipment cabinet and electrical service entrance ground at multiple connection points via minimum #6 AWG (16mm2) wire ground connector. There are three types of raised floor systems: • Free standing - consists solely of the tiles and pedestals supporting the tiles.
tightened to the manufacturer’s torque recommendation. • Good — Use the raised floor structure as a ground grid. In this case, the floor must be designed as a ground grid with bolted down stringers and tin-lead or zinc plating (to provide low resistance), and attachment points for connection to service entrance ground and HP rp7400 server equipment. The use of conductive floor tiles with this style of grid further enhances ground performance.
impedance than the techniques used in the excellent and good ground grid systems, and the resulting ground system will not perform as well.
Air Plenum In some data processing environments, the underflow area is used as an air plenum, with cool, controlled air flowing under the raised floor and distributed to the heat loads out in the data processing area. Return air is routed back to the tops of the process control HVAC units. This can create some potential problems: • Concrete sub-flooring should be sealed, but often is not. Concrete continues to ‘shed’ over its lifetime and will add to humidity control problems.
shock hazard may exist. For this reason, it is critical that a raised floor be properly grounded. Performance Drain A raised floor acts as a voltage divider -- a capacitive plate -- and it may create a performance issue for computer systems if improperly grounded. Computer systems create both electrostatic discharge and electromagnetic interference, and as processor speeds increase, these effects increase as well.
Specify Loading Requirements Floor loading is not usually an issue in nonraised floor installations. The information presented here is directed toward raised floor installations. Raised Floor Loading Raised floor loading is a function of the manufacturer’s load specification and the positioning of the equipment relative to the raised floor grid.
Typical raised floor site Following is an example of a computer room raised floor system that is satisfactory for the installation of an HP rp7400 system. These specifications are for the Tate Access Floors Series 800 all-steel access floor with bolt-together stringers and 24-in. (61.0-cm) by 24-in. (61.0-cm) floor panels.
Table 7 Item Rating Dead load 7 lb/ft2 (34.2 kg/m2) Live load 313 lb/ft2 (1528.3 kg/m2) Concentrated loada 1250 lb (567 kg) Ultimate load 4000 lb (1814 kg) per panel Rolling loadb 400 lb (181 kg) a. With 0.08 in. (0.2 cm) span maximum deflection. b. With 3 in. (7.6 cm) diameter by 1.8 in (4.6 cm) width wheels (and 10 computer simulated passes over the floor).
Specify Power Connections The HP rp7400 power system is a 200/208/230/240 VAC product requiring a dedicated 20A branch circuit. The power system is comprised of two or three 10A, 1163W n+1 hot-swappable system power supplies, depending on how the system is configured. The total continuously available power to the SPU is 2 x 1163W or 2325W. HP does not support plugging HP rp7400 power supplies into wall or floor sockets.
power the rp7400 SPU, any other peripherals must have their power supplied by additional PDUs in the cabinet. The PDU power cord (HP part number 8120-6903) has an L6-20P plug which must be plugged into an L6-20R wall or floor receptacle. • 30A modular PDU, HP product number E7681A (North America) or E7682A (International). This PDU has eight C13 outlets and two C19 outlets, split across two 20A branch circuits (max. 30A available). The PDU power cord has an L6-30 plug.
Specify Grounding Requirements Grounding systems HP rp7400 servers require two methods of grounding: • Power distribution safety grounding • High frequency intercabinet grounding NOTE Some of the grounding requirements described here may differ outside of North America. Power distribution safety grounding The power distribution safety grounding system consists of connecting various points in the power distribution system to earth ground using green (green/yellow) wire ground conductors.
conductors. The green (green/yellow) wire ground conductors should be sized per applicable codes (based on circuit over current device ratings). Computer equipment ground Ground all computer equipment with the green (green/yellow) wire included in the branch circuitry. The green (green/yellow) wire ground conductors should be connected to the appropriate power panel and should be parity-sized (based on circuit over current device ratings).
Connect each pedestal to four strips using 1/4 in. (6.0 mm) bolts tightened to the manufacturer’s torque recommendation. • Good—Use the raised floor structure as a ground grid. In this case, the floor must be designed as a ground grid with bolted down stringers and tin-lead or zinc plating (to provide low resistance and attachment points for connection to service entrance ground and HP rp7400 server equipment). The use of conductive floor tiles with this style of grid further enhances ground performance.
system will not perform as well. Floor panel Ground wire to power panel Hex bolt Grounding grid element unding clamp Band and pedestal Grounding braid to computer equipment Nonraised floor installations If the computer room does not have a raised floor, use a cable trough assembly to route equipment power cables. This cable trough assembly may be used as the conduit for high frequency ground.
Equipment grounding implementation details If it has been determined to be necessary, connect all Hewlett-Packard equipment cabinets to the site ground grid as follows: • Attach one end of each ground strap to the applicable cabinet ground lug. • Attach the other end to the nearest pedestal base (raised floor) or cable trough ground point (nonraised floor). • Check that the braid contact on each end of the ground strap consists of a terminal and connection hardware (a 1/4-in. (6.
compound (similar to Burndy Penetrox).
Cable trough top Cable trough to cable trough is as grounding s Ground connection of panel ground wire (inside trough) Groun Hex bolt, lle washer and nut Cable troug Drill trough as required en end at panel Hex bolt, bellville washer and nut Grounding braid to computer equipment 63
Identify the High Availability Requirements SPU-level Enhanced Power Availability At the SPU level, enhanced power availability is achieved through the n+1 hot-swappable power supplies. Two power supplies are required for normal rp7400 system operation and in order to allow the system to boot. The third power supply is a redundant power supply that provides the n+1 capability. Any one of the power supplies can fail without affecting system performance, and can be replaced while the system is on-line.
In this arrangement, any one branch circuit or any one 30A PDU can fail without shutting the system down. This reduces single point of failure to the facility power circuit providing power to the PDU or PowerTrust UPS. Site-level Power High Availability Some customer sites with critical applications may require high availability power beyond the scope of the equipment provided by Hewlett-Packard.
Determine the Acoustic Requirements The acoustic specifications for rp7400 servers are as follows: Sound power 7.5 Bels LwA maximum at >31oC Sound pressure 61 dB maximum at > 31o C in operator position. 58 dB maximum at >31o C in standby position. No prominent tones Reducing Acoustic Noise Levels Ambient noise level in a computer room can be reduced by the following means: • Dropped ceiling—Cover with a commercial grade of fire-resistant, acoustic rated, fiberglass ceiling tile.
Determine Temperature/Humidity Requirements The following table lists the computer room temperature and humidity specifications for rp7400 servers. Temperature and humidity specificationsa Parameter Recommended Operating Range Recommended Maximum rate of change (per hour) Temperatureb 41o to 104o F (0o to 40o C) 50o F nonrepetitive 10o C nonrepetitive (repetitive maximums not tested) Operating Humidity 15% - 80%, non-condensing at 65o C 30% RH/hour a. These are recommended values.
Identify Sources of Electrical Interference The following are some of the sources of electrical interference that may affect rp7400 servers. Convenience Wall Outlets Power outlets for building maintenance equipment (i.e., vacuum cleaners, floor buffers, etc.) must be wired from circuit breakers on a power panel separate from the computer system panel. The ground wires from these outlets must be connected to the normal building distribution panel; not the computer system ground.
Identify Other Environmental Influences The following are some of the other environmental influences that may affect rp7400 servers. Vibration Continuous vibration can cause a slow degradation of mechanical parts and, when severe, can cause data errors in disc drives. Mechanical connections such as printed circuit assembly (PCA) connectors, cable connectors, and processor backplane wiring can also be affected by vibration.
Other ways to minimize electrostatic discharge are by using specially grounded mats in front of the computer system or by treating carpeting with anti-static spray. Anti-static spray is not recommended because it finds its way into the system intake filter and tends to coat the circuitry. If spray is used, it should be applied while the system is turned off. Note that sprays are very temporary and must be reapplied frequently.
Identify Telephone Requirements and Define Remote Access At least two communication lines are required for rp7400 servers: one for the remote console facility, and another for UUCP. HP rp7400 servers provide remote console access via a modem for the secure console LAN, which is separate from the site or computer room’s campus LAN.
Identify Special Network Requirements HP rp7400 servers may require as many as three unique IP addresses. • The rp7400 server requires it own IP address. • The Guardian Service Processor, as a separate network device, has to have its own IP address, gateway, and subnet mask configured at the site in order to be separately addressed. The service processor does not support DHCP, so the IP address must be assigned out of a separate pool from any that are assigned dynamically.
Determine Service Access Needs Hewlett-Packard CEs must have clear and unobstructed access to perform service on the equipment. The rp7400 system also needs a sufficient aisle space for air flow and cooling. • Aisle space for cooling — a minimum of 0.91 meter (3 ft.) aisle space is recommended in the front and back of the rp7400 SPU cabinet. • Service area — The HP recommended service area for the front and rear of the rp7400 SPU should not take precedence over local codes and regulations.
Review the Plan With the Customer 30 days prior to solution delivery date, the Hewlett-Packard Site Preparation Specialist will verify that the site meets or exceeds the system requirements and specifications. At this time, the Site Preparation Specialist and the customer should again review the site survey checklist with particular attention to the following items: • Power needs. Verify that the required dedicated circuits are available.
