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Access "Directors take on more tasks"

Phil Goodwin Published: 19 Oct 2012

The competition among director-class products has never been more intense. If you're considering directors for the first time, or re-examining your fabric strategy, here's what you need to know. (This article orginally appeared in the June 2005 edition of "Storage" magazine.) In the early days of storage networking, Fibre Channel (FC) switches with four to 32 ports served the needs of most organizations. When requirements scaled beyond 32 ports, switches were connected using inter-switch links (ISLs). This architecture gradually evolved into a so-called "core-to-edge" fabric, with larger switches in the "core" and smaller switches at the "edge" of the storage infrastructure. Data directors were reserved for "monolithic" implementations, usually focused on the mainframe. Indeed, it's the mainframe environment from which data directors (also called channel directors) evolved. In the open-systems world, these products are called director-class switches, but the architecture is the same: More than 128 ports in a single package (frame) designed to offer high, ... Access >>>

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Features
    • DAS: The last bastions

      DAS holdouts

    • Storage sidles up to SUSE

    • iFCP vs. FCIP

      Two protocols—iFCP and FCIP—tap the scalability of the Internet Protocol and Ethernet networks, and can be used to overcome Fibre Channel networking limitations when connecting SAN islands. But iFCP and FCIP operate very differently; find out which one is right for your environment.

    • Is the time right for optical storage?

      Optical storage has languished on the periphery of enterprise storage, but new technologies with higher capacities and more competitive per-gigabyte prices are moving optical into the mainstream.

    • Directors take on more tasks by Phil Goodwin

      The competition among director-class products has never been more intense. If you're considering directors for the first time, or re-examining your fabric strategy, here's what you need to know.

    • New backup strategies

      In the final installment of his series on disk-based data protection, W. Curtis Preston describes how options such as snapshots, replication, continuous data protection and data reduction backup can improve the backup process.

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