NonStop NS2400 Series Planning Guide

8 Site Preparation Guidelines for NonStop NS2400T and
NS2400ST Systems
This chapter includes these topics:
• “System Cabling” (page 122)
• “Emergency Power-Off Connections” (page 122)
• “Electrical Power and Grounding Quality” (page 122)
• “DC Power System Warnings” (page 123)
• “Cooling and Humidity Control” (page 124)
• “Weight” (page 124)
• “Flooring” (page 124)
• “Receiving and Unpacking Space” (page 125)
• “Operational Space” (page 125)
• “Dust and Pollution Control” (page 125)
• “Zinc Particulates” (page 126)
• “Communications Interference ” (page 126)
For information about the physical specifications for system cabinets and components, see either
Specifications for NonStop NS2400T Systems (page 127) or Specifications for NonStop NS2400ST
Systems (page 137).
System Cabling
Power and I/O cables can enter the system from either the top or the bottom of the cabinets,
depending on how the cabinets are ordered from HP and the routing of the power feeds at the
site:
• Cabinets are optimized for top-down cabling.
• The design also accommodates an under-floor cabling system if the cabinets are installed on
a computer room raised floor.
Emergency Power-Off Connections
NonStop NS2400T and NS2400ST systems do not contain batteries capable of supplying more
than 750 volt-amperes (VA) for more that five minutes, so they do not require connection to a site
EPO switch.
Electrical Power and Grounding Quality
Proper design and installation of a power distribution system for a NonStop system requires
specialized skills, knowledge, and understanding of appropriate electrical codes and the limitations
of the power systems for computer and data processing equipment. For power and grounding
specifications, see the specifications for the server you are installing (Chapter 9 (page 127)).
NOTE: All NonStop NS2400T and NS2400ST cabinets must use DC input power.
122 Site Preparation Guidelines for NonStop NS2400T and NS2400ST Systems