An overview of the different methods for optimizing the virtual resources placement in the Cloud Computing

Abstract

The emergence of Cloud Computing has driven users of new technologies to adopt it. This is made possible by the used technologies, namely the virtualization, which is the key element in Cloud Computing. The management and orchestration of virtual resources (the virtual machine placement and VNFs) in the Cloud remains a complex task, which, recently, attracted the interest of many researchers. This paper provides an overview of the techniques adopted to optimize the virtual machines placement and the virtual networks functions. Focused on different resources (CPU, memory, bandwidth and storage)applied in a virtualized environment. These techniques always target several approaches including the improvement of the QoS defined in the service level agreements (SLA), the good management of the energy used by physical resources, the allocation of resources and the management tasks in the data center.