In this video lesson, a comparison of various storage devices, including hard disk drives (HDD), solid-state drives (SSD), optical disk drives, and flash memory, is discussed. The lesson explains the differences between SATA ports with different speeds and provides guidance on selecting the suitable hard disk based on motherboard compatibility and memory needs. An example problem with Mark’s computer, which can read but not write DVDs, is also covered to illustrate practical issues that may arise.