What is Enterprise storage management?

Enterprise storage management is management of computer data storage designed for large-scale, high-technology environments of modern enterprises. In contrast to consumer storage, it has higher scalability, higher reliability, better fault tolerance, and a much higher initial price. For IT engineers, the four main enterprise storage management areas are:  Online storage - large disk array solutions, minimizing access time to the data, and maximizing reliability; Backup - off-line storage for data protection, with a smaller price per byte than online storage, but at a cost of higher average access time; often uses sequential access storage, such as tape libraries; Archiving - technically similar to backup, but its purpose is long-term retention, management, and discovery of fixed-content data to meet regulatory compliance, litigation protection, and storage cost optimization objectives;  and Disaster recovery solutions, used to protect the data from localized disasters, usually being a vital part of broader business continuity plan.

(source: Wikipedia)