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Big Data / IoT Architecture, When to use this architecture, Field gateway,…

- - - - Flat namespace
        
        Slashes mimic hierarchical namespace
        
        Still valid aproach, e.g. app manges data itself
        
        One of the reasons that object stores haven't historically supported a hierarchical namespace is that a hierarchical namespace limits scale. However, the Data Lake Storage Gen2 hierarchical namespace scales linearly and does not degrade either the data capacity or performance.
    - - Access tiers
        
        Hot
        
        Cool
        
        Archive
      - Automated via polcies
    - - Hierarchical namespace
        
        HDFS (Hadoop compatible access)
        
        Security: POSIX + ACL
        
        Management: Organize and manipulate files through directories and subdirectores
        
        Build on top of Blob storage
        
        Storage costs more than Blob storage, but it requires less compute power because of hierarchical namespace, thus lower TCO