A data storage device that stores and retrieves digital information. The internal hard drive uses magnetic material-coated rotating platters to store information. Its usage is in desktop PCs, laptops, servers, and other electronic products. Internal hard drives are available in different sizes, capacities, and speeds to meet various user needs. To buy an internal hard drive, buyers should consider factors such as storage capacity, speed, size, interface, and reliability while selecting the best internal hard drive.