对象存储系统动态复制管理

2010 IEEE Fifth International Conference on Networking, Architecture, and Storage Pub Date : 2010-07-15 DOI:10.1109/NAS.2010.24

Q. Wei, B. Veeravalli, Zhixiang Li

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引用次数: 6

摘要

数据复制已被广泛用于提高大型存储系统的数据可用性，在这些系统中故障是很常见的。为了提供高性价比的可用性，提高大规模存储集群的性能和负载均衡，本文提出了一种动态复制管理方案(DRM)。建立了可用性作为副本数函数的模型。基于该模型，可以确定满足可用性要求的最小副本数。DRM进一步考虑到异构环境中每个OSD的容量和阻塞概率的不同，以均衡的方式将这些副本放置在各个OSD之间。DRM可以根据工作负载的变化和OSD的容量调整副本的数量和位置，在OSD集群之间动态地重新分配工作负载。实验结果表明，对于大规模OSD集群，DRM是可靠的，可以实现显著的平均响应时间和负载均衡。

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Dynamic Replication Management for Object-Based Storage System

Data replication has been widely used as a mean of increasing the data availability of large-scale storage systems where failures are normal. Aiming to provide cost-effective availability, and improve performance and load-balancing of large-scale storage cluster, this paper presents a dynamic replication management scheme referred to as DRM. A model is developed to express availability as function of replica number. Based on this model, minimal replica number to satisfy availability requirement can be determined. DRM further places these replicas among Object-Based Storage Devices (OSD) in a balance way, taking into account different capacity and blocking probability of each OSD in heterogeneous environment. Proposed DRM can dynamically redistribute workloads among OSD cluster by adjusting replica number and location according to workload changing and OSD capacity. Our experiment results conclusively demonstrate that DRM is reliable and can achieve a significant average response time, and load balancing for large-scale OSD cluster.

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2010 IEEE Fifth International Conference on Networking, Architecture, and Storage

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