Are there limitations to HDF4 files?
Yes. Here are some of the limitations on HDF4 files: HDF4 files cannot be larger than 2 GB. There is a limit of 20000 objects in an HDF4 file. Usually the limit is even less than that, and depends on the type of objects or features used. Minimal parallel I/O support. Supports only 1-D array of compound datatypes. Cannot easily delete or move objects in a file. Supports only 1 unlimited dimension (SD). Datasets with an unlimited dimension cannot be chunked or compressed.
