RACS: a case for cloud storage diversity
Proceedings of the 1st ACM symposium on Cloud computing
Long-range Evaluation of Risk in the Migration to Cloud Storage
CEC '11 Proceedings of the 2011 IEEE 13th Conference on Commerce and Enterprise Computing
The Cloud Adoption Toolkit: supporting cloud adoption decisions in the enterprise
Software—Practice & Experience
Cloud storage pricing: a comparison of current practices
Proceedings of the 2013 international workshop on Hot topics in cloud services
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When a company migrates to cloud storage, the way back is neither fast nor cheap. The company is then locked up in the storage contract and exposed to upward market prices, which reduce the company's profit and may even bring it below zero. We propose a protection means based on an insurance contract, by which the cloud purchaser is indemnified when the current storage price exceeds a pre-defined threshold. By applying the financial options theory, we provide a formula for the insurance price (the premium). By using historical data on market prices for disks, we apply the formula in realistic scenarios. We show that the premium grows nearly quadratically with the duration of the coverage period as long as this is below one year, but grows more slowly, though faster than linearly, over longer coverage periods.