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.
The Best & Fastest External Portable Hard Drive (HDD) â 2015. One of the biggest drawbacks in the currently available portable external hard drives is their low speed compared with the regular internal hard drives. While some internal hard drives reached the rate of 15k RPM spindle speed, the top-performing external hard drive still spins at 5,400 RPM, and this is for a valid reason.