News and Announcements from The HDF Group

New releases, fixes, and more.


This category can currently only be seen by employees of The HDF Group. It will be a destination for a FAQ.


Questions about Highly Scalable Data Service (HSDS) usage and implementation, as well as questions on HDF Lab.

VOLs and VFDs

Post your questions regarding specific VFDs and VOLs as well as developing for the VFD and VOL layer here.


All HDF5 questions, potential bug reports, and other issues.

HDFView / Java HDF Object Package

Any questions, bug reports, or other issues related to HDFView and the Java HDF Object Package.

HDF5 Ancillary Tools

Post here with questions relating to HDF5 ancillary tools.

Future Development and Product Ideas

Let us know what you’re thinking about!


All HDF4 questions, potential bug reports, and other issues.

C++ Users' Group

This category is for discussing the use of C++ with HDF5.


Hermes is a distributed I/O buffering system for deep distributed storage hierarchies, which are commonly found on modern HPC systems. Use this space to discuss ideas and issues relating to Hermes.

Hdf-forum archives

Messages from the previous HDF-Forum. These will be sorted into product categories as The HDF Group staff time allows.