Data Backup: Types, Methods, & the Rule of Three

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Data backups are becoming common safeguards as the use of technology grows, and even though you might have a second copy stashed away somewhere, there may still be gaps in your data loss defenses.

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I am confused! I need a backup system that will store (and update) data JUST as my hard disk does; that records all changes in real-time and by the time I shut my computer down it is a replica of my hard disk. WHAT is this type of backup called?

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