CSR: Small: High Assurance at Low Cost in Data Centers Using Virtualization

CSR：小：使用虚拟化的数据中心以低成本提供高保证

• 批准号: 0916972
• 负责人: Arun Venkataramani
• 金额: $ 42.4万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0916972&HistoricalAwards=false
• 关键词: CSR; Small; Assurance; Low; Cost

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).As our reliance on online services continues to grow, the need for maintaining high availability of these services has become a pressing need as well as a challenge. The challenges include hardware failures, software bugs, operator error, malicious break-ins, and wide-area disasters such as power blackouts and natural catastrophes. This project is developing techniques to build data center services that remain highly available under such challenging conditions using virtualization.The project makes two contributions. First, is a novel approach for Byzantine fault-tolerance (BFT) with a replication cost factor close to F+1 in order to tolerate up to F failures, thereby halving the cost of state-of-the-art BFT approaches. The savings in replication cost as well as commensurate gains in service throughput are realized using virtualization and are applicable to data centers hosting multiplexed services. Second, is a novel approach to seamlessly recover from wide-area disasters with negligible service replication cost during typical conditions. These gains are realized using virtual machine checkpointing, asynchronous replication, and semantics-aware storage techniques. The project demonstrates the feasibility of these approaches using theoretical analysis as well as prototype-driven experiments. The prototype implementations will be made available to other researchers and practitioners.

该奖项是根据2009年《美国复苏和再投资法案》(Public Law 111-5)资助的。随着我们对在线服务的依赖持续增长，保持这些服务的高可用性的需求已经成为一项紧迫的需求和挑战。这些挑战包括硬件故障、软件错误、操作员错误、恶意闯入以及停电和自然灾害等广域灾难。该项目正在开发使用虚拟化构建数据中心服务的技术，这些服务在这种具有挑战性的条件下保持高度可用。该项目有两个贡献。首先，是一种用于拜占庭容错(BFT)的新方法，其复制成本因数接近F+1，以便容忍多达F个故障，从而将最先进的BFT方法的成本减半。复制成本的节省以及服务吞吐量的相应提高都是通过使用虚拟化实现的，并且适用于托管多路复用服务的数据中心。第二，是一种新的方法，可以在典型情况下无缝恢复广域灾难，而服务复制成本可以忽略不计。这些收益是通过使用虚拟机检查点、异步复制和语义感知存储技术实现的。该项目使用理论分析和原型驱动的实验证明了这些方法的可行性。原型实现将提供给其他研究人员和实践者。