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在综合考虑RepStore、Ursa Minor、Triage这几种存储系统优缺点的基础上,本文提出一种自适应控制分布式存储架构原型ACOSS。此架构在存储系统轻载时,可以按照应用优先级来分配磁盘I/O带宽,重载或过载时可以在线更改存储设备上应用数据分布,减轻热点对象的I/O负担,保证存储系统的服务质量。
Considering the advantages and disadvantages of several storage systems, such as RepStore, Ursa Minor and Triage, this paper presents a prototype of ACOSS, an adaptive control distributed storage architecture. When the storage system is lightly loaded, the I / O bandwidth of the disk can be allocated according to the application priority. When the system is overloaded or overloaded, the application data distribution on the storage device can be changed online to reduce the I / O burden on hotspot objects and ensure the storage system service quality.