In the Data Grid environment, the primary goal of data replication is to shorten the data access time experienced by the job and consequently reduce the job turnaround time. After introducing a Data Grid architecture that supports efficient data access for the Grid job, the dynamic data replication algorithms are put forward. Combined with different Grid scheduling heuristics, the performances ...

Service oriented architecture (SOA) design principles are increasingly being adopted to develop distributed real-time and embedded (DRE) systems, such as avionics mission computing, due to the availability of real-time component middleware platforms. Traditional approaches to fault tolerance that rely on replication and recovery of a single server or a single host do not work in this paradigm s...

Distributed Hash Tables offer a resilient lookup service for unstable distributed environments. Resilient data storage, however, requires additional data replication and maintenance algorithms. These algorithms can have an impact on both the performance and the scalability of the system. In this paper, we describe the goals and design space of these replication algorithms. We examine an existin...

Decentralized logical coordinate systems have been proposed as a means of estimating network distances. These systems have widespread usage in p2p networks, ranging from neighbor selection to replica placement. Unfortunately, these systems are vulnerable to even a small number of malicious nodes lying about their coordinates or measurements. In this paper, we introduce Veracity, a fully decentr...

The HML and HMR loci carry unexpressed copies of MATa and MAT alpha information, and a replica of that information is transposed to MAT during mating-type interchange in Saccharomyces yeasts. A negative control mechanism keeps silent the information located at the HML and HMR loci. We mapped these loci by constructing strains in which these loci are expressed. In these strains, the mating type ...

This paper describes the design and implementation of Sorrento – a self-organizing storage cluster built upon commodity components. Sorrento complements previous researches on distributed file/storage systems by focusing on incremental expandability and manageability of the system and on design choices for optimizing performance of parallel data-intensive applications with low write-sharing pat...

Fault tolerance based on passive replication is common in many systems. If this kind of fault tolerance mechanism is to be used in a real-time system, timing analysis is necessary, as the fault tolerance mechanism itself may cause timing faults. There are different ways of detecting when the primary replica has failed, one of them is to use a timeout to detect crash and omission failures, anoth...

This paper targets the growing area of interactive data analytics engines. We present a system called Getafix that intelligently decides replication levels and replica placement for data segments, in a way that is responsive to changing popularity of data access by incoming queries. We present an optimal solution to the static version of the problem, achieving minimality in both makespan and re...

Due to severe performance penalties associated with synchronous replication, there is an increasing interest in asynchronous replica management protocols in which database transactions are executed locally, and the effects of these transactions are incorporated asynchronously on remote database copies. However, the asynchronous protocols currently in use either do not guarantee consistency and ...