I am thinking of buying an external hard drive for backing up data. There are two options available: 3.5 inch external hard drive with power supply or 2.5 inch portable hard drive without power supply.
I was wondering which one will be better. I have heard that the 2.5 inch ones last longer as they are designed for laptops but are slower compared to the 3.5 inch ones. Do the 2.5 inch ones really last longer ? If 2.5 inch ones are really slower than the 3.5 inch ones how slow are they compared to the 3.5 inch ones?