Subsystem Architecture

Most subsystems share the following functional elements:

  • Controller hardware and logic— Performs most of the storage functions in a subsystem, including the execution of storage commands received from host systems as well as subsystem-based storage applications

  • External storage network ports— Connects to host systems as well as optional data network ports for management connections

  • Memory— Used for caching storage data

  • Internal connection technology (including the bus or network technology)— Used to connect network ports with controllers and memory, as well as the device interconnect technology used to connect storage devices

  • Storage devices— Where data is eventually stored

Sometimes the term front end is used with storage ...

Get Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and Filing Systems now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.