Computer is a useful electronic device which is helpful for us in many ways. With the help of computer we can do all our works effectively and with great accurate. All the data in a computer is stored in digital format. All the data in computer is stored as binary values one and zero. For storing data generally we use devices like hard disk, floppy disk, compact disk, DVD and flash drives. Generally all these devices are used for backup purpose. Backup is nothing technical; it’s taking a copy of your data. The backup devices like floppy and compact disks are capable of holding some low amount of data in it.
A DVD disk can hold data up to 4.7GB. Other devices like hard disk, and flash drives are available in various storing capacity. Apart from these physical devices we can also backup our data through online. Through these Online Backup services we can store our data like picture, music and other documents. Some online backup service providers provide up to 2 GB space for free of cost. If we want to store more storage space through online we can buy from its providers. The data in the online backup will be remaining secure and safe.