Hybrid intra-cluster migration of data in an elastic cloud storage (ECS) environment is disclosed herein. A system comprises a processor and a memory that stores executable instructions that, when executed by the processor, perform operations that include moving a first data chunk from a first storage device to a second storage device during a data migration, based on a first determination that a first use efficiency of the first data chunk satisfies a defined use efficiency threshold. The operations also include moving a first data segment from a second data chunk in the first storage device to a third data chunk in the second storage device during the data migration, based on a second determination that a second use efficiency of the second data chunk fails to satisfy the defined use efficiency threshold. The first data segment includes data that is open for new writes and a second data segment includes data that is not open for new writes. After data is moved, capacity of the first data chuck is recovered. Moving the first data chunk preserves a chunk identifier of the first data chunk.