Electricity as the major issues in Indonesia with very limited availability from PLN, it is become not easy to get more electricity as the data-center getting bigger and more hungry to electricity.

Additional server, network, application to data-center will also create space limitation as we know the cost of space increasingly significant every year.

Additional space of datacenter in somecases will drive major pain and sometimes cause to relocate the building to accomodate new datacenter requirement.

Green IT will drive by virtualization of the processing power, then one blade server can manage vary from 5 to 20 application simultaneously usilizing share CPU, Memory and Storage.