Backup - AbsoluteAstronomy.com

Information technology

Information technology is the acquisition, processing, storage and dissemination of vocal, pictorial, textual and numerical information by a microelectronics-based combination of computing and telecommunications...

, a backup or the process of backing up is making copies of data

Data

The term data refers to qualitative or quantitative attributes of a variable or set of variables. Data are typically the results of measurements and can be the basis of graphs, images, or observations of a set of variables. Data are often viewed as the lowest level of abstraction from which...

which may be used to restore the original after a data loss

Data loss

Data loss is an error condition in information systems in which information is destroyed by failures or neglect in storage, transmission, or processing. Information systems implement backup and disaster recovery equipment and processes to prevent data loss or restore lost data.Data loss is...

event. The verb form is back up in two words, whereas the noun is backup.

Backups have two distinct purposes. The primary purpose is to recover data after its loss, be it by data deletion or corruption

Data corruption

Data corruption refers to errors in computer data that occur during writing, reading, storage, transmission, or processing, which introduce unintended changes to the original data...

. Data loss is a very common experience of computer users.