| The Flash Translation Layer library provides block management for low-level NAND devices. Not all |
| flash devices need this as many provide this functionality in their firmware. This directory |
| contains the FTL library only. It is integrated into the Fuchsia device hierarchy by the separate |
| FTL driver. |
| |
| NDM (NAND Device Manager) is the lower layer. It abstracts the different NAND types and error |
| correction schemes. Theoretically NDM can host multiple volumes on top of it but we do not use it in |
| this way. |
| |
| FTLN is the upper-layer that implements the wear leveling and garbage collection. |
