NonStop NS2400 Series Planning Guide

electronic components. Tape drives and some other mechanical devices can experience failures
resulting from airborne abrasive particles.
For recommendations to keep the site as free of dust and pollution as possible, consult with your
heating, ventilation, and air conditioning (HVAC) engineer or your HP site preparation specialist.
Zinc Particulates
Over time, fine whiskers of pure metal can form on electroplated zinc, cadmium, or tin surfaces
such as aged raised flooring panels and supports. If these whiskers are disturbed, they can break
off and become airborne, possibly causing computer failures or operational interruptions. This
metallic particulate contamination is a relatively rare but possible threat. Kits are available to test
for metallic particulate contamination, or you can request that your site preparation specialist or
HVAC engineer test the site for contamination before installing any electronic equipment.
Space for Receiving and Unpacking the System
Identify areas that are large enough to receive and to unpack the system from its shipping cartons
and pallets. Be sure to allow adequate space to remove the system equipment from the shipping
pallets using supplied ramps. Also be sure adequate personnel are present to remove each cabinet
from its shipping pallet and to safely move it to the installation site.
WARNING! A fully populated cabinet is unstable when moving down the unloading ramp from
its shipping pallet. Arrange for enough personnel to stabilize each cabinet during removal from
the pallet and to prevent the cabinet from falling. A falling cabinet can cause serious or fatal
personal injury.
Ensure sufficient pathways and clearances for moving the server equipment safely from the receiving
and unpacking areas to the installation site. Verify that door and hallway width and height as well
as floor and elevator loading will accommodate not only the server equipment but also all required
personnel and lifting or moving devices. If necessary, enlarge or remove any obstructing doorway
or wall.
All modular cabinets have small casters to facilitate moving them on hard flooring from the unpacking
area to the site. Because of these small casters, rolling modular cabinets along carpeted or tiled
pathways might be difficult. If necessary, plan for a temporary hard floor covering in affected
pathways for easier movement of the equipment.
For physical dimensions of the server equipment, see “Dimensions and Weights” (page 74).
Operational Space
When planning the layout of the server site, use the equipment dimensions, door swing, and service
clearances listed in “Dimensions and Weights” (page 74). Because location of the lighting fixtures
and electrical outlets affects servicing operations, consider an equipment layout that takes advantage
of existing lighting and electrical outlets.
Also consider the location and orientation of current or future air conditioning ducts and airflow
direction and eliminate any obstructions to equipment intake or exhaust air flow. For more
information, see “Cooling and Humidity Control” (page 49).
Space planning should also include the possible addition of equipment or other changes in space
requirements. Depending on the current or future equipment installed at your site, layout plans can
also include provisions for:
• Channels or fixtures used for routing data cables and power cables
• Access to air conditioning ducts, filters, lighting, and electrical power hardware
• Communications cables, patch panels, and switch equipment
50 Site Preparation Guidelines for NonStop NS2400 Series Systems