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It is a good idea, to save your work every half-hour or so when using a PC. The computer might crash, and your work is not safe until it is on your hard disk. Well, hard disks can crash too - not so often, but it does happen - and losing hundreds of megabytes of data can be totally traumatic. So, you must back up your hard disk regularly.
Most companies do not adequately plan for a disaster. In the event of a disaster, time and energy is spent planning for full recovery instead of implementing the recovery.
Although backups are time consuming, difficult and tedious, they are necessary evils with today's technology. Because today's personal computers are so reliable, you may be lulled into a false sense of security. Make no mistake -- hard drives crash, viruses can infect your system and destroy your data, human error can wreak havoc on your business, and a thief can simply steal your computer and its data goes with it!
A backup preserves a snapshot of your hard disk or network volume (or selected folders on them). It means that if you lose the working copy of an important file then you can at least go back to the version preserved in the backup.
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