Our repository in a different SCM system contains currently one directory for data and one for the source code. The data consists mostly of report templates (e.g. Excel workbooks, .docx files) and HDF5 files containing the structure (but not actual data).

As we are migrating to GIT, the question arises if it is actually good to keep versioning these data files within GIT. What are the best practices to deal with such files with GIT and if they should not be stored in the GIT repository, how are they usually versioned?