Consequently, the function information and technology (IT) staffs is under constant pressure and evolution to fine-tune the very essence of technological infrastructure by making it perform better and enable the organization to respond quickly to an ever-changing environment.
In addition, the IT organization now has to deliver services quickly to users so they can become more productive and efficient. And it has to do all these while keeping a handle on costs.
To deliver upon its now more demanding mandate, an increasing number of enterprises and business establishments have embarked on optimization initiatives such as virtualization and its extension, cloud computing. Both of these involve the use of shared infrastructure (primarily servers, storage and network resources) and serve up a multitude of benefits.
Other benefits of optimization initiatives include simplified physical IT infrastructure, lower TCO, scalability, resilience and reliability, enhanced security and outage recovery, and faster service delivery. However, while virtualization and cloud computing are beneficial, they also introduce new challenges. Take hypervisors as an example.
Hypervisors is a program that allows multiple operating systems to share a single hardware host. Each operating system appears to have the host's processor, memory, and other resources all to itself. However, the hypervisor is actually controlling the host processor and resources. It allocates what is needed to each operating system in turn and making sure that the guest operating systems (called virtual machines) cannot disrupt each other.
In essence software for managing virtual machines, a hypervisor is installed on server hardware dedicated to running guest operating systems. More often than not, several hypervisors are used in a single virtualized environment.
Given that each hypervisor comes with its own management tools, and that there is typically very little integration among the different sets of tools, performing tasks (for example, provisioning workloads) across multiple hypervisors can be a challenge.









