Ask a non-tech person what a data backup is – and they’ll probably answer that it is simply a second copy of data you make for safety. And they would be right! There isn’t much more to backup than the fact that it is a redundant copy of data – that you can rely on, should you lose your original copy.
Backup techniques have evolved over time and become increasingly sophisticated (and perhaps complex as a result). Considerations such as time taken for backup, time taken for restores, storage costs, network bandwidth savings, etc. – have all, over time, driven innovations that have been designed to make backups better – but also increase complexity as a result.There are mainly three types of backups: Full backup, differential backup, and incremental backup.
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