The data storage needs of large high-performance and general-purpose computing environments are generally best served by distributed storage systems. Traditional solutions, exemplified by NFS, provide a simple distributed storage system model, but cannot meet the demands of high-performance computing environments where a single server may become a bottleneck, nor do they scale well due to the n...

In this paper we attempt to parallelise a commodity database for OLAP on a cluster of commodity PCs by using a distributed high-performance storage subsystem. By parallelising the underlying storage architecture we eliminate the need to make any changes to the database software. We look at two options that differ in their complexity and features: Distributed devices and distributed file systems...

Today's network-oriented computing environments require high-performance, network-aware file systems that can satisfy both the data storage requirements of individual systems and the data sharing requirements of workgroups and clusters of cooperative systems. The Lustre File System, an open source, high-performance file system from Cluster File Systems, Inc., is a distributed file system that e...

Data grids are becoming increasingly important for sharing distributed data and information in collaborative environments. This paper presents a CORBA-based Distributed Resource Navigation system consisting of Resource Agents and Navigation Service. The former one is a middleware that provides applications with a uniform set of operations to access heterogeneous distributed storage resources in...

Quality of Service (QoS) is an essential aspect of any large storage system. The object-based storage model is an emerging distributed storage architecture that differs from the NAS and SAN storage models. The difference warrants a reexamination of how to provide QoS support under the new object-based model. In this position paper we examine the way in which QoS is achieved in existing distribu...

Large distributed storage systems use erasure codes to reliably store data. Compared to replication, erasure codes are capable of reducing storage overhead. However, repairing lost data in an erasure coded system requires reading from many storage devices and transferring over the network large amounts of data. Theoretically, Minimum Storage Regenerating (MSR) codes can significantly reduce thi...

Peer-to-peer systems are positioned to take advantage of gains in network bandwidth, storage capacity, and computational resources to provide long-term durable storage infrastructures. In this paper, we quantitatively compare building a distributed storage infrastructure that is self-repairing and resilient to faults using either a replicated system or an erasure-resilient system. We show that ...

The concept of Distributed Storage System (DSS) on to the Computing systems nowadays has a wide range of usage and applications. The most important criteria with regard to the storage are security, i.e ensuring the correctness of the data stored by the customers. Data which has to be distributed across multiple networks are most probably vulnerable to various attacks by number of malicious elem...

We describe the design of Mariposa, an experimental distributed data management system that provides high performance in an environment of high data mobility and heterogeneous host capabilities. The Mariposa design unifies the approaches taken by distributed file systems and distributed databases. In addition, Mariposa provides a general, flexible platform for the development of new algorithms ...

the effect of 6-month water storage on microleakage of two-component self-etch adhesive systems      dr. mohammadibasir m .,1 dr. seyed tabaii e .2   1 assistant professor, department of operative dentistry , school of dentistry, shahed university. tehran , iran.   2 dentist.     (received 5 dec, 2010 accepted 14 april, 2011)     abstract     background and aim : simplification of the self-etch...