Virtualisation is computing technology that simulates hardware functionality to create software-based IT services like applications, servers, storage and networks. By creating a virtual version of a resource or device (such as a server or desktop computer) from one computer system, virtualisation enables you to maximize the efficiency of computer hardware resources.
Server virtualisation enables multiple operating systems to run on a single physical server as highly efficient virtual machines.
Key benefits include:
• Greater IT efficiencies
• Reduced operating costs
• Faster workload deployment
• Increased application performance
• Higher server availability
• Eliminated server sprawl and complexity
By completely reproducing a physical network, network virtualisation allows applications to run on a virtual network as if they were running on a physical network — but with greater operational benefits and all the hardware independencies of virtualisation. (Network virtualisation presents logical networking devices and services — logical ports, switches, routers, firewalls, load balancers, VPNs and more — to connected workloads.)
Deploying desktops as a managed service enables IT organisations to respond faster to changing workplace needs and emerging opportunities. Virtualised desktops and applications can also be quickly and easily delivered to branch offices, outsourced and offshore employees, and mobile workers using iPad and Android tablets.
Storage virtualisation is when the physical storage from multiple devices on a network is pooled together in a unified virtual storage device that’s managed from a central console. To virtualise storage, you need virtualisation software that can identify available capacity from physical devices and aggregate that capacity together in a virtual environment. For end users, virtual storage looks like a standard physical hard drive. Virtual storage is an important component in IT strategy like hyper-converged infrastructure and allows IT admins to streamline storage activities like backup, archiving, and recovery.
Virtualisation vs. Cloud Computing
Although equally buzz-worthy technologies, virtualisation and cloud computing are not interchangeable. Virtualisation is software that makes computing environments independent of physical infrastructure, while cloud computing is a service that delivers shared computing resources (software and/or data) on demand via the Internet. As complementary solutions, organisations can begin by virtualising their servers and then moving to cloud computing for even greater agility and self-service.
Reduced capital and opertating costs
Minimised or eliminated downtime
Increased IT productivity, efficiency, agility & responsiveness
Faster provisioning of applications and resources
Greater business continuity and disaster recovery
Simplified data center management
Availability of a true Software-Defined Data Center