34 The Green and Virtual Data Center
Power is available to the facility, but the facility’s power distribution
infrastructure is constrained.
Power is available to the facility, but standby or backup power is
insufficient for growth.
Power is available in the general area, but utility constraints prevent
delivery to the facility.
Power costs are excessive in the region in which the IT equipment
and facilities are located.
General factors that affect PCFE resource consumption include:
Performance, availability, capacity, and energy efficiency (PACE) of
IT resources
Efficiency of HVAC and power distribution technologies
The general age of the equipment—older items are usually less effi-
cient
The balance between high resource utilization ...