Virtual computers and virtual data storage

Virtual data storage represents a new business model which includes various concepts such as virtualization, design of distributed applications and management which enables flexible data access. These methods include using networks of remote servers instead of local servers and personal computers for storing, managing and editing data. Locations containing servers which execute applications and store data are not strictly defined, hence terms “virtual data storage” or “storing data in the cloud” are used. As the need for storing data increased, managing that data became harder as well. Backing up data in large organizations is an inconvenient task. In spite of the increase in power and storage capacity of computers, prices of storing and maintaining data remains high. Various technologies and solutions have developed over time to overcome this problem and in the end they evolved into virtualization of the system for data storage.