Backup Basic Concepts

What is a Backup?

Copy of data in same location or remote location.

Need of Backup:

To recover the lost or corrupted files.

To restore any server to its last working state/original state.

To restore any application or application data

Backup Types:

Types of the backup categories based upon the way it has been performed

Full Backup:
-Backup the full system or all files and folders.
-Normally takes long time to complete.
-Consumes ample storage.

Incremental Backup:
-Backup files that are new or changes since last incremental backup.
-Faster process.
-Consumes less storage.
-Lengthy restoration process.

Differential Backup :
-Backup files that are new or changed since last full backup.
-Much faster process than incremental and full backups.
-Consumes less storage.
-Restoration takes considerable time.