This green computing is too expensive, experiencing a higher net spend on staff as well as with higher support costs. Energy consumption of distributed IT environments is difficult to audit, but some have also noted a progressive increase in power consumption with the move from centralized to decentralized, then to distributed architecture, and finally to mobility-based computing.
increase in computing power and server numbers for a given floor area multiplies cooling problems, since air is an inefficient media for cooling computers and empty space alone
is insufficient to give adequate cooling. Air conditioning and other cooling techniques are required to keep temperatures in check. A typical 1980s server could be cooled quite easily, but
though a modern server takes up much less floor space, it is more difficult to cool, and requires more space around it. Though it will require less power per unit of computing power, its overall energy requirement will be considerably higher, and the need for improved cooling will further increase energy requirements and environmental impact.
