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HOME > PRODUCTS > HDF5_TOOLS > H4TOH5
| HDF5 | HDF (4.x and previous releases) |
|---|---|
| Can handle files over 2GB | - |
| No limit on the number of objects | Max limit is 20000 objects and sometimes less |
| One flexible data model | Several rigid data models |
| Supports parallel I/O | Minimal parallel I/O support |
| Threadsafe (designed to be) | - |
| Supports multi-dimensional array of compound datatypes | Supports only 1-dimensional array of compound datatypes |
| Supports variable length datatypes | - |
| Supports references to objects (?) | - |
| Supports "mounting" of files | - |
| Supports hard/soft links | - |
| -makes delete/move objects easy | Difficult to do |
| Can flush data immediately | - |
| Extensive datatype/datatype conversion support | More restricted |
| Virtual File layer | - |
| Performance tuning - lots of things | Minimal |
| Ability to register your own compression methods | - |
| Supports multiple unlimited dimensions | Supports 1 unlimited dimension |
| Supports complex subsetting features | Supports basic subsetting features |
| True hierarchical file structure | "pseudo-flat" file structure using vgroups |
| More metadata support | Metadata support |
| Can convert to/from XML | - |
- - Last modified: 27 January 2017