The capacity of hard drives varies; currently the typical capacity is 500-1000 GB, but hard drives of over 1500 GB, i.e. 1,5 terabit, are also available. However, the capacity of the internal hard drives in laptop computers is often less than that.You can add to the capacity of your computer by attaching an additional hard drive, either internally or externally. More information about storage sizes can be found here.
Since important files are saved to the hard drive, the individual discs in the hard drive are fixed into protective casing to keep the files safe. In spite of this protection, the discs may receive damage, so you should definitely take backup copies of the files on your hard drive every now and then (please see backup copies for more information)!
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