John A. Pershing

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Océano is a prototype of a highly available, scaleable, and manageable infrastructure for an e-business computing utility. It enables multiple customers to be hosted on a collection of sequentially shared resources. The hosting environment is divided into secure domains, each supporting one customer. These domains are dynamic: the resources assigned to them(More)
This paper describes GulfStream, a scalable distributed software system designed to address the problem of managing the network topology in a multi-domain server farm. In particular, it addresses the following core problems: topol-ogy discovery and verification, and failure detection. Unlike most topology discovery and failure detection systems which focus(More)
In this paper we describe a utility computing framework, consisting of a component model, a methodology, and a set of tools and common services for building utility computing systems. This framework facilitates the creation of new utility computing systems by providing a set of common functions, as well as a set of standard interfaces for those components(More)
1 Abstract— Availability is one of the important factors to be considered for business-driven IT service management. This paper addresses the issue of analyzing what we call availability weak-points in an SOA deployment framework, leveraging work-flow definitions to specify the high availability requirement at the business process level. In our weak-point(More)
Information technology service management (ITSM) codifies and supports the current best practices in the management and governance of existing IT infrastructures, including the computing infrastructure that underlies service delivery. Once ITSM tools have identified and structured current best practices, there is a significant opportunity to simplify those(More)
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