External hard disks are like internal hard disks, but the difference is that the external hard disk is compact and is connected to a USB port so as to be read. It has also got to be powered to the mains so that you can access and save your info. Otherwise, there is no much difference between the internal and compact hard disks. The same stuff that have an effect on the internal hard drives are the same that impact on the external hard drives.
So that the query one could pose is ‘Is there anything like external hard disk failure? ‘ and ‘If yes, how does it happen? ‘ Just as internal hard disks get damaged and fail, external hard disks also do fail. Here’s why : Power rises : Most computer hardware that is intended to be attached to the power mains have a certain amount of voltage they can handle. This is the same for external hard drives. Thus, if there’s a power surge, it means that the external hard drive is bound to get damaged.
Supplying more voltage to the hard drive than it can hold can damage the internal parts of the drive and cause the external hard disk not to function correctly. This is a risk as one may lose their info in the act. if power goes or if you are not using the external hard drive, remove the power from the mains. It is safer that way.
Human Mistake : Being compact devices, external hard disks can get damaged simply, especially because of human error. So far, I have not found a perfect homo sapien. This implies that humans are sure to screw up. Man can drop the hard disk and it may get physically damaged. In the worst case, the external hard disk may drop in water, if, might be it was raining. Hence human beings are unforeseeable and you cant be certain when the next mistake will be done. It is, therefore , important that you try and use caution when handling your external disk drive.
Infection by viruses : Just as viruses infect internal hard drives, the external disk drives are no exception. They too can be infected by viruses. The viruses will corrupt the info stored within it and accessing some of the info becomes difficult. In a number of cases, the viruses make the files untouched. Click here : hard drive recovery and backup external hard drive for more data.