Many of the typical storage units have flash counterparts, where spinning disks are replaced with flash memory.
SSD Flash Storage — Found in many laptops, solid-state drives have been used to slim down device form factors, while reducing weight. However, SSD storage capacity does not meet the same levels that electromechanical spinning disk drives can.
All-flash Array (AFA) — An all-flash array, as the name implies, is a storage array composed of only flash memory drives. Also known as a solid state array (SSA).
Hybrid Flash Storage — Hybrid flash storage combines both solid-state drives and spinning disk drives in ways that advantage from both. Hybrid flash arrays provide greater capacity than SSDs, and the performance capabilities of flash memory. The ratio of the two types of storage depends on the model, or the custom make of the array. One main use for hybrids is to allow teams to gradually replace existing spinning disk storage modules.