This whitepaper from Glasshouse Technology discusses how to use a multi-tiered cloud structure to provide the protection required for critical workloads while reducing overall costs.
Implementing A Multi-tiered Cloud Service Strategy
Cloud technologies open up new avenues of data and application availability. However, treat all workloads the same and you’ll spend too much on expensive cloud technology that you don’t need, spend too little and you put the business at risk. Done thoughtfully, a multi-tiered cloud strategy can provide all the protection required by critical workloads, and a cost savings for non-critical workloads.