Exploring data reliability tradeoffs in replicated storage systems

This paper explores the feasibility of a cost-efficient storage architecture that offers the reliability and access performance characteristics of a high-end system. This architecture exploits two opportunities: First, scavenging idle storage from LANconnected desktops not only offers a low-cost storage space, but also high I/O throughput by aggregating the I/O channels of the participating nodes. Second, the two components of data reliability – durability and availability – can be decoupled to control overall system cost. To capitalize on these opportunities, we integrate two types of components: volatile, scavenged storage and dedicated, yet low-bandwidth durable storage. On the one hand, the durable storage forms a low-cost back-end that enables the system to restore the data the volatile nodes may lose. On the other hand, the volatile nodes provide a high-throughput front-end. While integrating these components has the potential to offer a unique combination of high throughput...

• Type: Conference
• Year: 2009
• Where: HPDC
• Authors: Abdullah Gharaibeh, Matei Ripeanu
• Keywords: Cost-efficient Storage Architecture, Distributed Computing, Durable Storage, HPDC 2009, Volatile Nodes