external drive

i remember my husband's uncle told me a few months back that he has a back up external hard drive for all his files and stuffs. you see, he has so many softwares being run is his laptop but he doesn't want to suffer the default drives of it for the amount of loads that needs to be save, so he bought one and have it as his back up. sometimes he only brings that with him whenever he goes out to see and install some softwares and other programs in his friends unit. a very convenient of owning a handful of softwares isn't? having one is an advantage for those who are into gearing up their own computers and notebooks. and for the programmers and computer wizards out there who are into creating softwares and programs too.