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Vol. 4 No. 1 March 2005

NAS heads: Gatekeepers for enterprise storage

NAS heads Click here for a comparison table about NAS heads (PDF). Managing files has become a big headache for enterprises. How should the files be stored, and on what tier of disk? And are there other considerations, such as legal regulations pertaining to the disposition of the files? Consolidating disparate NAS filers behind a NAS appliance gateway offers companies an effective way to scale file systems and manage back-end storage arrays, but it also creates its own set of problems. As NAS gateways move off the array and into the network, organizations must start to plan how best to use them. A NAS head appears in the network in one of two ways. In the traditional sense, it ships as part of a larger storage subsystem with its own set of disk, such as Network Appliance (NetApp) Inc.'s FAS980, and as a standalone appliance, such as NetApp's gFiler that functions as a gateway to connect storage arrays of different tiers and even different vendors. These gateway products generally use Fibre Channel (FC) to connect to back-end ...

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Features in this issue

  • SMI-S has legs

    SMI-S support gaining ground

  • Midmarket yearns for remote replication

    Midsized companies want enterprise-class replication

  • Spotlight on midrange arrays

    Midrange arrays can handle most jobs traditionally associated with costly monolithic arrays at a far lower price. Our Special Report describes the benefits of these modular storage systems, profiles 14 of the leading midrange arrays and offers a look at what's coming.

  • Securing IP SANs

    IP SANs use commodity hardware and industry-standard protocols to provide a cost-conscious, easy-to-manage alternative to Fibre Channel arrays. But with IP comes the issue of security. We detail five ways to make an IP SAN more secure.

  • Buzzword: SPAID

  • Rescue stranded storage

    by  Alex Barrett

    How SRM products can help you discover capacity that isn't accessible to an array.

  • First Look: Archivas ArC

    Archivas' ArC software is a highly scalable archiving application that can store fixed content as WORM data while still providing quick access to files.

  • NAS heads: Gatekeepers for enterprise storage

    A NAS head can aggregate disk capacity on storage systems, making it easier to share files and usedisk space efficiently. NAS head capabilities vary, so understanding product features and your requirements is crucial.

  • EMC TOEs the iSCSI line

    by  Alex Barrett

    Target-side TCP/IP Offload Engine chips have arrived, but the jury is still out on whether you should care.

Columns in this issue