This paper presents a model of a distributed energy storage resource and its actuation signal. Many previous studies of distributed energy storage systems have assumed that the system has no energy storage limitations and that the actuation signal has no net or instantaneous energy content. This model includes these conditions so as to enable the design of automatic generation control signals w...

— For large scale distributed storage systems, flash memories are an excellent choice because flash memories consume less power, take lesser floor space for a target throughput and provide faster access to data. In a traditional distributed filesystem, even distribution is required to ensure load-balancing, balanced space utilisation and failure tolerance. In the presence of flash memories, in ...

Nowadays, transactional in-memory distributed storage systems are widely used as a mean to increase the performance of applications that need to access frequently large amount of shared data. In this context, data replication has two main advantages: it supports load balancing and fault-tolerance. However, these advantages need to be weighted against the costs of replications: namely memory con...

Nowadays, transactional in-memory distributed storage systems are widely used as a mean to increase the performance of applications that need to access frequently large amount of shared data. In this context, data replication has two main advantages: it supports load balancing and fault-tolerance. However, these advantages need to be weighted against the costs of replications: namely memory con...

The trend towards self-organization of systems like peer-to-peer or mobile ad hoc networks generates increasing needs for distributed data management, in particular data backup and distributed storage functions that will themselves be self-organized and cooperative. Unfortunately, in such systems, the data stored are exposed to the selfishness (e.g. data discarded because of lack of resources) ...

Most replicated storage and file systems either take a specialized hardware approach or a sofhuare-oriented approach to fault tolerance. This paper describes a fault-tolerant disk storage and file system that falls in between the hardware and software categories. The system uses Reflective Memory to interconnect an array of standard computers comprising a massively parallel system. This archite...

Online archival capabilities like snapshots or checkpoints are fast becoming an essential component of robust storage systems. Emerging large distributed file systems are also shifting to object-based storage architectures that decouple metadata from file I/O operations. As the size of such systems scale to petabytes of storage, it is critically important that file system features continue to o...

0272-1732/00/$10.00  2000 IEEE The need to access anything from anywhere has increased the role of distributed file servers in computing. Distributed file systems provide local file system semantics for access to remote storage. This allows network clients to incorporate the remote storage into their local file system. File semantics are well understood by users and applications, making distri...

BACKGROUND As health providers move towards higher levels of information technology (IT) integration, they become increasingly dependent on the availability of the electronic health record (EHR). Current solutions of individually managed storage by each healthcare provider focus on efforts to ensure data security, availability and redundancy. Such models, however, scale poorly to a future of a ...

The amount of digital data is rapidly growing. There is an increasing use of a wide range of computer systems, from mobile devices to largescale data centers, and important for reliable operation of all computer systems is mitigating the occurrence and the impact of errors in digital data. The demand for new ultra-fast and highly reliable coding techniques for data at rest and for data in trans...