Originally Answered: What is the difference between tumour and cancer? A tumor can be benign or cancerous. A benign (non cancerous) tumor is a mass of cells that lacks the ability to invade neighboring tissue.
While portable slim hard drives are meant for carrying around in a backpack or laptop bag, all but the largest 32 TB and 64 TB external hard drives (featured here above) are still small enough for easy transport in a backpack or briefcase.
A desktop external hard drive is 3.5 inches and generally has a higher capacity, usually 4-8 TB. A portable external hard drive is 2.5 inches and has a smaller capacity, most commonly 1-2 TB. Some portables have rugged builds that are pressure and water resistant.