Backup or Backup: A little bit of the backup concept.
O backup refers to the process of making copies of data or data files to use in the event of loss or destruction of original data or files.
Secondarily, a backup it may refer to making copies for historical purposes, such as longitudinal studies, statistics or historical records, or to meet the requirements of a data retention policy.
Many applications, especially in a Windows environment, produce backup using the .BAK file extension.
Talking about backup or backup
Not all systems or applications for backup are able to completely restore a computer system or other complex system configurations. Nor is it a database server, computer cluster, or active directory server.
Managing the backup process involves organization and is a complicated process. An unstructured backup can simply consist of a stack of tapes. However, it is obvious that security and ease of use data recovery are seriously compromised.
Full and incremental backup
They start with backing up all the data. Then, only new or modified data files or data are backed up, a much smaller segment of all data.
Restoring the entire system to the data state at a specific time requires the last complete backup of the system. In addition, you will need all the incremental backups performed up to that point.
At the differential backup, a copy is made of all data and data files that have been changed since the last full backup. However, there is no attribute or archival record. This means that there is no record of when the backup occurred or how the data was changed.
Full system backup
Full backup allows you to restore your computer system at any given time, including the operating system, all applications and all data.
It creates a complete image of the computer. The user can reconstruct any data changes after that time, possibly with an incremental backup.
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