subject: How Does the 321 Backup Strategy Work? [print this page]
In the case of the 3,2,1 backup method, multiple copies are made of all important files and are stored in different locations. This method requires you to have three copies in total, two different storage media, and one copy that is kept off-site. For instance, the first copy can be stored on your computer, the second one on an external hard drive, while the third can be kept in a cloud. This technique allows you to decrease the risks associated with hardware failure, stealing, accidental loss, or even ransomware.
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