optical storage devices/magnetic hard drives(HDDs)
the key difference between optical and magnetic storage media is how computers read and write information on them. the former uses light while the latter uses electromagnetism. it's faster and easier to write data to magnetic storage media.hard drives can store vast amount of data and are called random access devices, which mean you don't have to search through the entire hard drive to retrieve a piece of data at the end of the disk.however,data stored on the optical media tends to be more durable.