In our personal computer Hard Disk is an important hardware which is used as Data stores device. it is also known as pc memory. all files, operaring system and softwaers are stored in Hard disk drive(HDD) it is made of magnetic tapes on which the data is stored. once the data is stored it can be access randomly. HDD is also known as non-volatile memory because of the data is safe when the system off.
besides above these there are many advantages as, it increase the speed of the date transfer rate. this is easily available in the market you can get 1-2 TB HDD between Rs. 4000-7500.
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