High availability has become increasingly important to businesses with the advent of the Web and various associated e-commerce services. This paper describes the key attributes of the very highest availability systems. Such systems and their associated support environments are qualitatively different than other systems, even other high availability systems; for the purposes of this paper these ...

The core idea of availability-based routing consists of exploiting the availability as a link-state metric: this kind of approach has received attention by virtue of the ability to avoid excessively unavailable paths. A recent availabilitybased heuristic design technique for reliable optical transport networks [IEEE Sel. Areas Commun. 23, 1520 (2005)] showed that the availability metric returns...

In this paper, the redundancy and synchronization scheme for the high reliable surveillance data processing system for air traffic control is suggested. Two indices for reliability of surveillance data processing system are identified and full triple redundancy scheme and high availability software for the redundancy control are proposed. The synchronization issues among triple redundant nodes ...

The increasing number of Internet users has caused a dramatic increase in electronic commerce. This growth is outpacing technologies for dependability causing traditional views of high availability to come under question. In particular, Internet failures are a phenomenon external to the owner of a commerce site that must be dealt with, and therefore, geographically distributed servers are a bas...

Since the initial introduction of Open Source Cluster Application Resources (OSCAR), this software package has been a well-accepted choice for building high performance computing systems. As it continues to be applied to mission-critical environments, high availability (HA) features therefore are needed to be included in OSCAR cluster. In this paper, we provide a HA solution for OSCAR cluster. ...

This paper presents a novel architectural solution for improving dependability of Web Services. This approach is based on the concepts from the emerging resilienceexplicit computing combined with the traditional fault-tolerance techniques such as recovery blocks and N-version programming applied in the context of the serviceoriented architecture. We propose a distributed solution called WS-Medi...

this study examined the nature and patterns of rice consumption in nigeria, using kwara state as a case study. the study methodology comprised a two stage sampling technique which was used to survey 110 rice consumer households across two villages and six towns in kwara state. analytical tools used in the study include descriptive statistics and the multinomial logit model. the major factors th...

abstract - one of the important problems in grid environments is data replication in grid sites. reliability and availability of data replication in some cases is considered low. to separate sites with high reliability and high availability of sites with low availability and low reliability, clustering can be used. in this study, the data grid dynamically evaluate and predict the condition of t...

Major efforts are underway to develop fusion energy for use in electric power production in the furture. While fusion reactor concepts are being developed, appropriate attention must be given to problems relvant to the utility requirements which are likely to be encountered in the commercialization phase. In this paper the expected fusion plant availability is assessed in detail due to the impo...