Analysis of Grid Storage Element Architectures: High-end Fiber-Channel vs. Emerging Cluster-based Networked Storage
Storage elements that can scale to large capacities and high-performance are an essential component of future GRID infrastructures, especially for supporting an increasing number of data-intensive applications and services. This paper studies two approaches for building scalable networked storage elements: enterpriselevel, Fibre-Channel-based Storage (FCS) and commodity, Cluster-based Networked Storage (CNS). First we review the characteristics of FCS, which is currently widely used in high-end enterprise-level installations, discussing various aspects, such as scalability, performance, availability, manageability and security. Then, we compare it with CNS and consider how features of high-end specialized systems may be provided on top of this new architecture. We believe that CNS has a potential for replacing FCS in many application domains; however, there is a need for addressing the feature gap between FCS and CNS at the architectural and storage management layer.
KeywordsStorage systems storage management Storage Element
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