Evolocity II Installation Guide.book - Abel Keogh

2 Preparing for Installation
Preparing the Site
Component
EPDU 120
EPDU 250
UPS Control Unit*
UPS Battery*
Icebox
Cabling (per host)
Unit Weight
3 lbs. (1.3 kg)
3 lbs. (1.3 kg)
25 lbs. (11.3 kg)
80 lbs. (36.2 kg)
5 lbs. (2.2 kg)
1 lb. (0.4 kg)
Note
Inspect the floor intended to support the cluster to determine that it has sufficient structural integrity
to carry the load applied by the cluster—to ensure safety, consult a structural engineer. The most ideal
solution is to install a raised floor specifically designed for computer centers. A flooring system of this
type provides the maximum convenience and safety, allowing you to run cables under the floor and
providing a means by which cold air may be forced into rack enclosures to ensure efficient cooling.
Cooling Requirements
Clustered computers produce potentially large amounts of heat that can drastically reduce the life span of your
cluster components. Although Evolocity II clusters operate at approximately 22° F (11° C) cooler than
standard 1U and 2U solutions, you should take adequate steps to prevent the cluster from overheating.
Warning!
Hosts require substantial cooling targeted specifically at each host. Hosts that are not cooled
sufficiently may shut down or suffer irreparable damage.
One of the most significant factures in ensuring adequate cooling is room size. A large room with high ceilings
allows heat to rise away from the computing equipment, providing plenty of airflow in and around the cluster.
If you purchased a cluster that contains more than five hosts, it may be necessary to equip your room with an
additional, commercial air-conditioning unit. Most computer rooms maintain an average temperature between
60–68° F (16–20° C). If your cluster produces enough heat to overwhelm your present cooling system,
additional cooling is a must. The room should have sufficient air conditioning capacity to support the cooling
needs of the entire cluster and use controls that prevent excessive temperature fluctuation.
To ensure that the equipment used to cool the cluster is adequate, determine the total power consumption (in
watts) of all devices in the room and convert that number to British Thermal Units (BTUs). This is
accomplished using the formula watts x 3.412 = BTU. For specific altitudinal cooling requirements, refer to
the table on page 3.
Evolocity II Installation Guide