Information data

• Data is a collection of raw facts from which conclusions may be drawn.
• data can be generated using a computer and stored in strings of 0s and 1s is digital data
• access by user only after it is processed by a computer
• Information is the knowledge derived from data.
• 2 types of data(on how data is stored & managed):
• structured(organized in rows & columns in a defined format, stored using DBMS)
• unstructured if its elements cannot be stored in rows & columns(more % in total data).
• Big data: data sets whose sizes are beyond the ability of commonly used software tools
• to capture, store, manage, and process within acceptable time limits
• it includes both structured & unstructured data
• contains all types of data.

Storage

• Stores data created by individuals & organizations for further processing
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Evolution Of Storage Architecture:

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

To overcome these challenges, storage evolved from server-centric to information-centric architecture. In this architecture, storage devices are managed centrally and independent of servers. These centrally-managed storage devices are shared with multiple servers. When a new server is deployed in the environment, storage is assigned from the same shared storage devices to that server.