The 26 Most Awesome Happy Meal Toys Of The '90s. Technically, any toy that came with food was pretty great. But these were exceptional.
In this case, primary storage typically refers to random access memory (RAM), while secondary storage refers to the computer's internal hard drive. RAM, commonly called memory, is considered primary storage, since it stores data that is directly accessible by the computer's CPU.
While the computer's primary internal hard drive is the most common secondary storage device, other devices may be considered secondary storage devices as well. These include additional internal hard drives, external hard drives, and optical drives, which are used for CDs, DVDs, and other optical media.