Backup involves copying data in an IT system to another location so it can be recovered if the original data is lost. That loss can be due to hardware failure, cyber attack such as ransomware, natural disaster, or human error, such as accidental deletion.
Data backup is a key component of an organisation's data protection strategy and business continuity and disaster recovery (BCDR) planning. Argually, the rise in importance of analytics and AI in recent years makes backups more important than ever.
Effective backup has also become more complex as IT departments deal with a variety of systems - including virtual servers and desktops, and containerised applications - as well as multiple datacentres and cloud locations.
In this article, we look at what backup is, and what it isn't (and how it differs from snapshots and replication). We also look at what data to backup, how often, and with which backup scheme.
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