Server virtualization is one of the fastest adopted technologies in datacenter history, becoming the overwhelming default build for servers in just a little more than a decade. Customers aggressively moved virtualization from test and development (test and dev) workloads to production workloads. Today, most of the remaining workloads to be virtualized are mission-critical tier 1 workloads. Thes...

Enterprises continue to move their technologies and services onto the Web. Today, the Web servers that provide these services are distributed across multiple systems. As the number of Web applications increases, it is very common for the number of physical systems in the data center hosting these Web applications to increase along with them. Studies from IDC, among others, describe the challeng...

In this paper we propose a new infrastructure for real-time applications. As a preliminary, we describe basic characteristics of the most popular real-time services like VoIP, videoconferencing, live media streaming, and network multiplayer games. We focus on the end-to-end latency, bandwidth and efficient transmission methods. Next, we present our project concepts, infrastructure model, detail...

Network infrastructure is composed of various devices located either in the core or at the edges of a wide-area network. These devices are required to deliver high transaction throughput where a transaction may involve processing one protocol data unit (PDU). Throughput of network infrastructure applications running on general-purpose architecture based servers is constrained due to excessive m...

We describe Lira, a lightweight infrastructure for managing dynamic reconfiguration that applies and extends the concepts of network management to component-based, distributed software systems. Lira is designed to perform both component-level reconfigurations and scalable applicationlevel reconfigurations, the former through agents associated with individual components and the latter through a ...

Grid workflows are normally composed of multilingual applications. Monitoring such multilingual workflows in the Grid requires an instrumentation infrastructure that is capable of dealing with workflow components implemented in different programming languages. Moreover, Grid workflows introduce multiple levels of abstraction and all levels must be taken into account in order to understand the p...

An Extranet is used to connect businesses with their suppliers, customers or other businesses that share common goals in a way that automates their administrative interactions using Internet technology. The security of the communications over Internet is considered an essential feature. To guarantee secure operation the aid of some user authentication infrastructure is needed. This paper introd...

Intelligent Transportation Systems (ITS) are cost-effective measures to manage congestion due to increasing demand by improving the efficiency of existing transportation infrastructure. Traffic detection and surveillance play a pivotal role in deploying these technologies in the field. This dissertation continues the work that has been done in recent years in relation to the use of wireless mag...

Cloud computing allows business users to scale up or down resource needs according to current demands (utility computing). Infrastructures for cloud computing can be distinguished with respect to the layer they operate on. In case of platform as a service (PAAS) frameworks are provided in order to simplify the construction of cloud applications relying on common base abstractions and tool sets....

Customers deploying Business Critical Applications (BCAs) have requirements such as stringent SLAs, sustained high performance, and continued application availability. It is a major challenge for organizations to manage data storage in these environments. Common issues in using traditional storage solutions for BCAs include inadequate performance, storage inefficiency, difficulty to scale, comp...