Managing Cloud resources e ciently necessitates e ective policies that assign applications to hardware in a way that they require the least resources possible. Applications are rst assigned to virtual machines which are subsequently placed on the most appropriate server host. If a server becomes overloaded, some of its virtual machines are reassigned. This process requires a hotspot detection m...

Project Crossbow in OpenSolaris is introducing new abstractions that provide virtual network interface cards (VNICs) and virtual switches that can have dedicated hardware resources and bandwidth assigned to them. Multiple VNICs can be assigned to OpenSolaris zones to create virtual network machines (VNM) that provide higher level networking functionality like virtual routing, virtual load balan...

Cloud computing is a new paradigm for hosting and delivering services on demand over the internet where users access services. It is an example of an ultimately virtualized system, and a natural evolution for data centers that employ automated systems management, workload balancing, and virtualization technologies. Live virtual machine (VM) migration is a technique to achieve load balancing in ...

Cloud computing is becoming a very popular way to outsource data storage, services or even infrastructure. Clouds are large network data centers that make use of virtualization technology, thus enabling dynamic scalability and , from user’s perspective, apparent infinite resources. Clouds host services in virtual machines that are isolated from one another and can be migrated within or between ...

LCC is a Lightweight Coordination Calculus which can be used to provide an executable, declarative specification of an agent interaction model. In this paper, we describe an LCC-based system for specifying the migration behaviour of virtual machines in a datacentre. We present some example models, showing how they can be used to implement different policies for the machine allocation and migrat...

Hardware virtualization gives administrators the flexibility to rapidly create, destroy and relocate virtual machines across physical hosts. Unfortunately, the storage systems upon which these systems depend are not nearly as agile. To facilitate the rapid, safe development of block devices that can meet the needs of virtual machines, we present the Block Mason virtual block device framework. A...

Cloud computing services will play an important role to meet various requirements of the clients in daily lives. In cloud computing, virtualization is an important issue to minimize cost incurred to manage data centers across the world. The energy consumption has become the reason for higher cost in operating data centers. Savings can be achieved by continuous consolidation with live migration ...

Live migration has been proposed to reduce the downtime for migrated VMs by pre-copying the generated run-time memory state files from the original host to the migration destination host. However, if the rate for such a dirty memory generation is high, it may take a long time to accomplish live migration because a large amount of data needs to be transferred. In extreme cases when dirty memory ...