Storage protocols for block, file, and object storage

Evolutionary Theory


Today, developers and users demand more flexibility, performance, and availability from the IT infrastructure. The reason is the increasing dynamism in the area of new applications, data formats, users, and changing workload profiles as they emanate from IoT or AI projects in the course of digitalization. Because of the strong growth of semi-structured and unstructured datasets at multi-petabyte orders of magnitude, the classic SAN and NAS architecture is reaching its technical and economic limits.

The storage protocols mentioned here will of course be affected in different ways, and choices are also likely to depend significantly on the dominant use cases in the long term. However, one thing is clear: Consolidation on system architectures with integrated "unified" cloud protocol capabilities (file, block, object) on software-defined platforms and with clustered filesystems will continue at an increasing pace.


  1. "IDC: Expect 175 zettabytes of data worldwide by 2025" by Andy Patrizio, Network World, December 2018:

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