I feel like what they are describing is more defragmentation than garbage collec...

		jethroalias97 on Oct 20, 2012 \| parent \| context \| favorite \| on: Anatomy of a Solid-state Drive I feel like what they are describing is more defragmentation than garbage collection. The article uses garbage collection to mean taking sparsely filled blocks and consolidating them into a single block to free the sparsely filled ones. Garbage collection in the OO context is where you free memory the program can no longer interact with. Perhaps it means different things in different contexts?

A sparsely-filled block contains some valid data and some old invalid data, i.e. garbage.