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[netCDF #PNY-378050]: netCDF4/HDF5 - Classic vs Enhanced models

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [netCDF #PNY-378050]: netCDF4/HDF5 - Classic vs Enhanced models
  • Date: Thu, 17 Jul 2014 06:17:48 -0600
Hi Oh-ig,

> I read an article on the data models vs file formats & I'd like to confirm 
> what I think I understood.
> Let's say I have several variables that I'd like to store in netCDF4/H5 
> format using Classic model.
> 
> If I take the Classic model for netCDF4/HDF5 file format, can I still store 
> data variables larger than 2 GB per variable?

Yes.  The netCDF-4 Classic Model format supports large variables, compression, 
and chunking, as 
well as other performance enhancements.  For more details, see this FAQ section:

  http://www.unidata.ucar.edu/software/netcdf/docs/faq.html#formats-and-versions

--Russ

Russ Rew                                         UCAR Unidata Program
address@hidden                      http://www.unidata.ucar.edu



Ticket Details
===================
Ticket ID: PNY-378050
Department: Support netCDF
Priority: Normal
Status: Closed