
Chapter 3. Logical configuration concepts and terminology 67
Repository for track space-efficient volumes (TSE)
The definition of track space-efficient (TSE) volumes begins at the extent pool level. TSE
volumes are defined from virtual space. The size of the TSE volume does not initially use
physical storage. However, any data written to a TSE volume must have enough physical
storage to contain this written data. This physical storage is provided by the repository.
The
repository is an object within an extent pool. It is similar to a volume within the extent
pool. The repository has a physical size and a virtual size. The physical size of the ...