Virtual machine technology and the ease with which VMs can be migrated within the LAN, has changed the scope of resource management from allocating resources on a single server to manipulating pools of resources within a data center. We expect WAN migration of virtual machines to likewise transform the scope of provisioning compute resources from a single data center to multiple data centers sp...

Workload consolidation is a technique applied to achieve energy efficiency in data centres. It can be realized via live migration of virtual machines (VMs) between physical servers with the aim to power off idle servers and thus, save energy. In spite of innumerable benefits, the VM migration process introduces additional costs in terms of migration time and the energy overhead. This paper inve...

In class we discussed the paper “The Design and Implementation of Zap: A system for Migrating Computing Environments” (Zap) by Osman et all at Columbia, as well as “Live Mirgration of Virtual Machines” (VMMigration) by Clark et all at Cambridge and Copenhagen. We had guest lecturers for the class, Greg Q and Joe M. In addition to discussion of the two different approaches to process migration p...

We are developing an advanced IaaS (Infrastructure-as-a-Service) datacenter management system that dynamically minimizes running physical servers depending on resource utilization. The management system periodically monitors the loading of a datacenter, and dynamically repacks virtual machines (VMs) into optimal physical servers. Live migration of VMs and the standby mode of physical servers ar...

Load balancing is one of the main challenges in a Virtual Machine (VM) Environment in order to ensure equal utilization of all the available resources while avoiding overloading a subset of machines. In this paper, we propose an efficient load balancing strategy based on VM live migration. Unlike previous work, our strategy records the history of mappings to inform future placement decisions. W...

Various numbering schemes are used to track different versions and revisions of files, software packages, and documents. One major challenge in this regard is the lack of an all-purpose, adaptive, comprehensive and efficient standard. To resolve the challenge, this article presents Quadruple Adaptive Version Numbering Scheme. In the proposed scheme, the version identifier consists of four integ...

Live virtual machine migration allows the movement of a running VM from one physical host to another with negligible disruption in service. This enables many compelling features including zero downtime hardware upgrades, dynamic resource management, and test to production service migration. Historically, live migration worked only between machines that shared a common local subnet and storage s...

Virtualization provides a vehicle to manage the available resources and enhance their utilization in network computing. System dynamics requires virtual machines be distributed and reconfigurable. To construct reconfigurable distributed virtual machines, service migration moves the runtime services among physical servers when necessary. By incorporating the mobile agent technology, distributed ...

Hypervisors and Operating Systems support vertical elasticity techniques such as memory ballooning to dynamically assign the memory of Virtual Machines (VMs). However, current Cloud Management Platforms (CMPs), such as OpenNebula or OpenStack, do not currently support dynamic vertical elasticity. This paper describes a system that integrates with the CMP to provide automatic vertical elasticity...