It continues to evolve today, and is used in all storage architectures such as DAS, SAN, etc.(See below for RAID Chart.) • Direct-Attached storage (DAS): This type of storage connects directly to the server (host) or a group of servers in a cluster.To overcome these challenges, storage technology evolved from non-intelligent internal storage to intelligent networked storage.

The types of storage used varies based on the type of data and the rate at which it is created and used.

Devices such as memory in a cell phone or digital camera, DVDs, CD-ROMs and hard disks in personal computers are examples of storage devices.

The proliferation of departmental servers in an enterprise resulted in unprotected, unmanaged, fragmented islands of information and increased operating cost.

Originally, there were very limited policies and processes for managing these servers and the data created.

Data can be classified as structured or unstructured based on how it’s stored and managed.

Structured data is organized in rows and columns in a rigidly defined format so the applications can retrieve and process it efficiently.

For example, customer contacts may be stored in various forms such as sticky notes, email messages, business cards or even digital format files such as .doc, and

Due to its unstructured nature, it’s difficult to retrieve using a customer relationship management application.

Data, whether structured or unstructured, does not fulfill any purpose for individuals or businesses unless it’s presented in a meaningful form.