The hard disk drive (HDD) is the main storage for your personal computer. Your hard drive permanently saves files, photos, videos and program data so that it can be accessed every time you boot up your computer. HDDs work by retrieving this saved information from a spinning magnetic disk. Your primary hard drive is located inside your desktop computer or laptop, but external models are available to serve as a backup system or transfer large amounts of data between multiple computers. It's important to store and transport HDDs carefully due to their moving parts. Because of their internal components, HDDs are somewhat larger compared to other computer components, and can take up more energy as they operate, for example by draining the battery of a laptop more quickly during heavy use. The spinning internal disk can be knocked out of alignment by impacts, excessive heat or exposure to magnets, which can result in reduced functionality and eventually failure.
Benefits of HDD storage