Backing up data means to save the information present on your computer on another device, such as CD/DVD drives or hard disk. Data can recovered from here in case the computer stops working completely.
Computers can crash, humans can make mistakes and natural disasters, such as floods can happen. So, it is important for companies, hospitals, banks, etc., to keep their information safe — so that their business can continue to function smoothly and their customers do not face problems.
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