HP Cluster Platform Site Preparation Guide

See Section 1.5.4 (page 25) for information about calculating the power requirements for a cluster
module (rack).
Warning!
To reduce the risk of personal injury, fire, or damage to the equipment, do not overload the AC
supply branch circuit that provides power to the rack.
Consult the electrical authority that has jurisdiction over your facility's wiring and installation
procedures.
When planning the power distribution requirements for your rack configuration, follow these
guidelines:
• Balance the power load between available AC supply branch circuits.
• Do not allow the overall cluster AC current load to exceed 80 percent of the branch circuit
AC current rating.
• If you connect the cluster to an uninterruptible power supply (UPS), do not allow the overall
cluster AC current to exceed 80 percent of the UPS's marked electrical current rating.
Installation of this equipment must be in accordance with local and regional electrical regulations
governing the installation of information technology equipment by licensed electricians. This
equipment is designed to operate in installations covered by the latest revisions of the National
Electric Code (ANSI/NFPA-70 or later revision in force) and the code for Protection of Electronic
Computer/Data Processing Equipment (NFPA-75 or later revision in force). For electrical power
ratings on options, see the product's Safety/Regulatory label or the user documentation supplied
with that option.
See also the general guidelines in Appendix C (page 51).
1.8 Grounding Requirements
For proper operation and safety, all powered rack-mountable components must be properly
grounded in accordance with NFPA-70, 2002, Article 645 or later revision in force. All power
distribution devices, branch wiring, and receptacles must be listed as grounding-type devices.
When using power strips for electrical distribution, make sure that ground integrity is maintained
for each connection made. Plug each component into a reliably grounded outlet. See Appendix C
(page 51) for information about typical grounding requirements in computer rooms.
Warning!
To reduce the risk of electric shock or damage to your equipment, do not disable the power cord
grounding feature.
This equipment is designed to be connected to a grounded (earthed) power outlet that is easily
accessible and located as close as possible to the equipment. The grounding plug is an important
safety feature.
1.9 Environmental Requirements
For safe and reliable operation of equipment, the cluster's installation environment should comply
with the following environmental requirements.
1.9.1 Temperature Requirements
An HP Cluster Platform is intended for installation in an environment-controlled computer room.
Reliable operation of the system depends on continuous, uninterrupted climate control (dew
point, temperature, and relative humidity) of the system environment.
The HP Rack 10000 Series is designed to provide efficient front-to-rear cooling, which facilitates
a computer room cooling design based on hot and cold aisles. Clusters are designed to be installed
32 Installation Planning