In this paper we present a new web based Distributed File System server management tool to perform load balancing across multiple servers. The Distributed File System from Distributed Computing Environment (DCE DFS) is a collection of many file systems mounted onto a single virtual file system space with a single namespace. The tool is based on rule-based data mining techniques and graph analys...

As the I/O needs of parallel scientific applications increase, file systems for multiprocessors are being designed to provide applications with parallel access to multiple disks. Many parallel file systems present applications with a conventional Unix-like interface that allows the application to access multiple disks transparently. This interface conceals the parallelism within the file system...

Heterogeneous and scalable remote data access is a critical enabling feature of widely distributed collaborations. Parallel file systems feature impressive throughput, but sacrifice heterogeneous access, seamless integration, security, and cross-site performance. Remote data access tools such as NFS and GridFTP provide secure access to parallel file systems, but either lack scalability (NFS) or...

The exponentially increasing amount of data in file systems has made it increasingly important for file systems to provide fast file-search services. The quality of the file-search services is significantly affected by the file-index overhead, the file-search responsiveness and the accuracy of search results. Unfortunately, the existing file-search solutions either are so poorly scalable that t...

The topic of enhancing security in XML databases is important as it includes protecting sensitive data and providing a secure environment to users. In order to improve security and provide dynamic access control for XML databases, we presented XLog file to calculate user trust values by recording users’ bad transaction, errors and query severities. Severity-aware trust-based access control for ...

In this paper we present a new web based Distributed File System server management tool to perform load balancing across multiple servers. The Distributed File System from Distributed Computing Environment (DCE DFS) is a collection of many file systems mounted onto a single virtual file system space with a single namespace. The tool is based on rule-based data mining techniques and graph analys...

We propose a novel method to study storage system predictability based on the visualization of file successor entropy, a form of conditional entropy drawn from a file access trace. First-order conditional entropy can be used as a measure o f predictability. It is superior to the more common measures such as independent likelihood of data access. For file access data, we developed a visualizatio...

1. Introduction and Motivation Conventional access methods cannot be effectively used in large Scientific/Statistical Database (SSDB) applications. A file structure (called bit transposed file) is proposed which offers several attractive features that are better suited for the special characteristics that SSDBs exhibit. This file structure is an extreme version of the (attribute) transposed fil...