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According to the international data corporation (IDC), it is expected that an agency investigating trends in the international ICT market, the use of a variety of smart devices and the internet have increased dramatically, and the volume of data, such as digital contents have surged and the amount of stored data is expected to exceed 40,000 ex bytes, which is expected to surge 50 times compared to 2010, and accordingly, it will require more than 10 times as many servers (Korea IT promotion agency, 2012).

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