The prime purpose of this article is to know about phenomenon of data storage. Therefore, the devices of data storage, from memory sticks to hard disks are used lengthily in office and at homes. They all are peripheral to the computer and the data can be securely stored. It supplements and adds on to the accessible computer memory. They are too called as detachable data storing devices because they are exterior to the computer and want to be linked to entrance the stored data in the device.