Next-generation virtualisation goes way beyond server virtualisation and provides the platform for virtualised storage, virtualised networking and cloud orchestration tools that are essential elements of a software-defined data centre. Cloud-native architectures, containerised data and hyperconvergence are some of the technology approaches that a next generation, software-defined data centre can enable and the benefits of these are huge. Businesses are more agile, flexible and dynamic. Administrators can centrally control their infrastructure, regardless of where it is situated and applications move to centre stage, repositioning technology as a business enabler, not a separate department.
One huge trend in the data centre is hyperconvergence, which relies on software-defined storage, whereby the hypervisor dynamically allocates the right amount of storage to the applications that are running in the data centre. Additional compute, storage and management resources are delivered by adding additional server hardware, which is then viewed as shared storage and allocated to the apps as they need it, via the hypervisor. Without this level of next-generation virtualisation, achieving a hyperconverged infrastructure is not possible.
Virtualised networks work in a similar fashion, using the hypervisor to pool the network resources and attach them to individual virtual machines based on the defined policies for each application. The underlying network acts as a simple packet forwarding mechanism, whilst the management, provisioning and security features are all dealt with by the hypervisor. Because virtualised networks completely decouple the network functionality from the network hardware, they differ from software-defined networks, which use clever software to manage networking hardware rather than separating it entirely. The benefits of this hardware decoupling are realised when moving virtual machines between logical domains, as there is no network reconfiguration required and the administration overhead savings can be immense.
Likewise cloud orchestration is a buzz word right now and a next generation virtualisation platform really does provide the right foundation for a cloud-native environment, where different cloud services can be combined and managed simply. Making tangible reductions in administration overheads once again becomes a reality if you have a platform that can help you to manage all of your cloud services. The use of cloud services is growing massively, especially those in the public cloud market, as concerns around security and privacy are allayed and confidence in the public cloud providers grows. Indeed, Gartner predicts that globally, public cloud usage will grow by 17.3% in 2019 to total $206.2bn and many of the businesses using public cloud will also have a mix of SaaS applications, private cloud services and on-premises, physical infrastructure. What is already and will be even more important for customers is a platform where everything can be managed, without dipping in and out of interfaces and requiring different accreditations and skills.
In short, a next generation virtualised environment is much more than virtual machines. As hardware becomes almost irrelevant, the hypervisor is the powerful tool of choice, and the applications dictate what resources are needed, where and when. The application really does become king.U