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Network Attached Storage Architecture

Marketing. IBM report users are adding storage capacity at about 100% per year.A new market has emerged for data-center outsourcing for both complete applications (application service providers) and storage systems only (storage service providers).Analysts predict that by 2005 the primary medium f

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Network Attached Storage Architecture

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    1. Network Attached Storage Architecture Garth A. Gibson and Rodney Van Meter

    2. Marketing IBM report users are adding storage capacity at about 100% per year. A new market has emerged for data-center outsourcing for both complete applications (application service providers) and storage systems only (storage service providers). Analysts predict that by 2005 the primary medium for storage backup will be online hard disks.

    3. Marketing How many videos are stored in Youtube? In 2006, a Wall Street Journal article reported that Youtube hosted about 6 million videos In 2008, a Youtube search returned more than 80 million videos.

    4. Advantage for Network Storage Reduce wasted capacity Time to deploy new storage Backup convenience Simplify storage management Enable the sharing of data among clients

    5. Disadvantages Increase complexity of systems spread across a network. Data integrity and privacy are more vulnerable to malicious users of the network. All distributed and Internet applications share their solutions as well as their problems.

    6. Storage Area Network (SAN) SAN systems provide a simple, untyped, fix-size (block), memory-like interface (such as get block, set block) for manipulating nonvolatile magnetic media. SAN uses Fibre Channel Network to connect hardware.

    7. Network Attached Storage (NAS) NAS systems provide a richer, typed, variable-size (file), hierarchical interface (such as create or delete file, read or write file subset, and lookup file name). NAS uses Ethernet Network to connect hardware.

    8. This article is about how emerging technology may blur the network-centric distinction between NAS and SAN.

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