Special Issue Article
Robust Cloud Resource Provision
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Cloud computing is a large distributed computing environment in which collection of resources is available to user through internet. The user can access the resources by paying the price for the infrastructure they use. At present, Cloud provider can offer two provisioning plans for computing resources namely reservation and on-demand plans. Reservation plan is cheaper than on-demand plan but best advanced reservation is difficult to achieve due to uncertainty of user’s future demand and provider’s price. Demand and price uncertainty is considered in Optimal Cloud Resource Provisioning (OCRP) algorithm. The OCRP algorithm can provision resources for being in multiple provisioning stages as well as long term plan. OCRB uses Stochastic programming Here a Robust Cloud Resource Provisioning (RCRP) algorithm is used in order to achieve the best advance reservation. Certain uncertainties like demand, price, resource utilization and consumers cost is considered in RCRP. RCRP is proposed to minimize the total provisioning cost by considering the uncertainty. In the proposed system the RCRP algorithm can be implemented at Agent side as opposed to implementation at cloud broker.