Following is an excerpt from a report in expresscomputerline.

S.P. Singh, Sr. Director, DIT, Government of India, underscored the importance of support infrastructure in e-governance implementations. The government of India has taken the initiative of providing this infrastructure and its three pillars are State WAN (SWAN), State Data Centers (SDC) and Citizen Service Centers (CSC).

…The mandate of the SDC scheme is that data centers are to be set up in all 35 states and union territories. It involves an outlay of 1,623 crores over five years and this takes care of the CAPEX for setting up data centers as well as the OPEX for five years.

The idea (SDC) is to concentrate and migrate IT infrastructure in state governments to a centralized environment that provides 24×7 services.

With regard to BC and DR, Singh said the four data centers of the NIC will provide disaster recovery to individual states. A 64,000 sq. ft. data center will come up in Delhi to begin with. Pune, Hyderabad and Bhubaneswar will follow suit eventually.

BC refers to Business Continuity and DR refers to Disaster Recovery.