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The plugins can actually store the objects in variety of ways. A plugin could, for example, have objects be distributed remotely over different platforms, provide a raw mapping of the model to the file system, or even store the data in other file formats (like native netCDF or HDF4 format). The user still gets the same data model where access is done to a single HDF5 “container”; however the plugin object driver translates from what the user sees to how the data is actually stored. Having this abstraction layer maintains the object model of HDF5 and allows better usage of new object storage file systems that are targeted for Exascale systems.

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Two Virtual File Drivers (VFDs) have been introduced in 1.12:

  • The S3 VFD enables access to an HDF5 file via the Amazon Simple Storage Service (Amazon S3).
  • The HDFS VFD enables access to an HDF5 file with the Hadoop Distributed File System (HDFS).

See the Virtual File Drivers - S3 and HDFS page for more information.

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Hyperslab Performance Improvements

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