![]() To save disk space, the files are compressed: you can’t see the originals on the drive, though you can extract them. To save time and disk space, these timed backups – often daily but sometimes hourly – are “incremental”, which means only changes are recorded. This is what backup software aims to do, and this includes the programs provided with Windows and other operating systems. Backing up a PCĪ full backup would enable you to restore your PC to a previous state without losing anything, or not much. ![]() Old family photos might be impossible to replace, and you would pay a recovery company £500-£1,000 or so to get them back. Your unfinished PhD thesis, blockbuster novel or genealogy database would be worth a lot more because of the time and effort it would take to recreate it from scratch. For example, the audio files you ripped from your CDs are not worth much: you could rip them again, or buy digital tracks on Amazon. As a rough guide, work out the replacement cost of your files and how much you would pay to replace them. Others may not care if their PC works, they just want to be sure they have copies of irreplaceable family photos, or the PhD thesis they have almost but not quite finished.ĭifferent files obviously have different values. At one extreme, some people need a fail-safe system where everything is backed up all the time, and they can restore their computer to its state at an earlier date and time. Unfortunately, there isn’t a single answer, because people have different amounts of different types of data, and different needs. They’re certainly important to businesses, but businesses can pay experts to tell them the answers, or they can buy pre-packaged “solutions” of various sorts. For consumers, the problems of what, when and how to back stuff up are less urgent. The main problem is that most people don’t make backups reliably, if ever.
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