By 1991, IBM had squeezed 1 GB into the 3.5-inch, eight-platter 0663 Corsair HDD, and by 2018, you could purchase a 16 TB 3.5-inch Seagate hard drive off the shelf, which equates to the storage ...

It used seven 14-inch "platters" to hold data. 1980 - IBM introduced the first 1GB hard drive. With its complete casing, it was the size of a refrigerator, weighed about 550 pounds, and cost $40,000.