2. HDFS Storage Types

HDFS storage types can be used to assign data to different types of physical storage media. The following storage types are available:

  • DISK -- Disk drive storage (default storage type)

  • ARCHIVE -- Archival storage (high storage density, low processing resources)

  • SSD -- Solid State Drive

  • RAM_DISK -- DataNode Memory

If no storage type is assigned, DISK is used as the default storage type.