This paper considers replication strategies for storage systems that aggregate the disks of many nodes spread over the Internet. Maintaining replication in such systems can be prohibitively expensive, since every transient network or host failure could potentially lead to copying a server’s worth of data over the Internet to maintain replication levels. The following insights in designing an ef...

In this paper, we analyze a highly distributed backup storage system realized by means of nano datacenters (NaDa). NaDa have been recently proposed as a way to mitigate the growing energy, bandwidth and device costs of traditional data centers, following the popularity of cloud computing. These service provider-controlled peer-to-peer systems take advantage of resources already committed to alw...

Fully distributed storage systems have gained popularity in the past few years because of their ability to use cheap commodity hardware and their high scalability. While there are a number of algorithms for providing differentiated quality of service to clients of a centralized storage system, the problem has not been solved for distributed storage systems. Providing performance guarantees in d...

The rapid growth of data and data sharing have been driven an evolution in distributed storage infrastructure. The need for sensitive data protection and the capacity to handle massive data sets have encouraged the research and development of secure and scalable storage systems. This paper identifies major security issues and requirements of data protection related to distributed data storage s...

Ada 95 has been the first standardized language to include distribution in the core language itself. However, the set of features required by the Distributed Systems Annex of the Reference Manual is very limited and does not take in account advanced needs such as fault tolerance, code migration or persistent distributed storage. This article describes how we have extended the basic model withou...

Providing a shared memory abstraction in distributed systems is powerful tool that can simplify the design and implementation of software for networked platforms. This enables system des