University of Minho
Many cloud providers offer an array of storage services that represent different points along the performance, reliability, cost, and durability spectrum. However, an application must manage the complexity of different interfaces to these storage services and their diverse policies, if it needs the composite benefits of multiple storage tiers. The authors believe it is possible to provide the benefits of customized tiered cloud storage to applications without compromising on simplicity. In this paper, they introduce Tiera, a system that enables the specification of multi-tiered cloud storage instances that are flexible, easy-to-use, and enable a rich array of storage policies and desired metrics to be realized.