VM/ESA: a single system for centralized and distributed computing
IBM Systems Journal
Computer
Xen and the art of virtualization
SOSP '03 Proceedings of the nineteenth ACM symposium on Operating systems principles
Sharing FCP adapters through virtualization
IBM Journal of Research and Development
Live migration of virtual machines
NSDI'05 Proceedings of the 2nd conference on Symposium on Networked Systems Design & Implementation - Volume 2
Quantifying the performance isolation properties of virtualization systems
Proceedings of the 2007 workshop on Experimental computer science
Introduction to the New Mainframe: Z/Vse Basics, March 2007
Introduction to the New Mainframe: Z/Vse Basics, March 2007
FCP for the IBM eServer zSeries systems: access to distributed storage
IBM Journal of Research and Development
Scheduling highly available applications on cloud environments
Future Generation Computer Systems
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Leveraging redundant resources is a common means of addressing availability requirements, but it often implies redundant costs as well. At the same time, virtualization technologies promise cost reduction through resource consolidation. Virtualization and high-availability (HA) technologies can be combined to optimize availability while minimizing costs, but merging them properly introduces new challenges. This paper looks at how virtualization technologies and techniques can augment and amplify traditional HA approaches while avoiding potential pitfalls. Special attention is paid to applying HA configurations (such as active/active and active/passive) to virtualized environments, stretching virtual environments across physical machine boundaries, resource-sharing approaches, field experiences, and avoiding potential hazards.