Modern organizations are looking for ways to shape their environment of IT systems as part of their internal development so as to reduce the cost of use and to increase the performance at reasonable costs of ongoing management.
Until recently, virtually every company maintained systems in the form of a dedicated infrastructure. Then they began to use the virtualization of resources on an increasingly wider scale. A virtual environment enriched with some capabilities, especially regarding the management and accounting, has evolved into a private cloud, that is an environment used only within one organization or set of organizations of a single owner.
The main advantages of cloud computing based on the virtualization include:
- the parallel use of physical server resources by multiple virtual machines, which results from the low probability that all parallel virtual servers will work at the same time using 100% of their potential;
- an easy recovery of the whole system after a failure;
- data location on shared disk resources, which prevents downtime of the applications during maintenance work on servers;
- moving entire systems between data centers has become possible even over long distances;
- systems have become ...