RAID Storage–High-level Impact

  • Determine the order of importance of the performance, capacity and redundancy. This, of course, depends on the prepress application. Performance measures the speed of transferring and receiving data to the server or desktop system. It can be measured by megabytes per second or by improved productivity. It varies from application and system configurations.
  • Choosing RAID technology requires an understanding of the different levels of RAID, known as RAID 0, 1, 3 and 5. Each RAID level offers different degrees of performance, availability and cost.

    “While the word ‘level’ is commonly used with RAID, the term does not mean that the different levels indicate a quality or performance ranking,” Leenerman says. “The numbers only indicate different methodologies, all of which are useful for particular types of data or applications.”

    The Ciprico 7000 series comes with a Fibre Channel interface allowing up to 100MB/second transfer speed. Ciprico’s 6900 series has a 40MB/second interface and the same redundancy features. Recently, Ciprico introduced its FibreSTORE disk array for entry-level requirements.

    “The trend in the graphic arts to embrace RAID storage technology answers two requirements: Deliver the higher throughput needed to sustain the processing of imagesetters, proofers and applications that could not perform with the limitation of a single hard drive performance, and secure the work during production and the waiting cycles needed between stages,” reports Gideon Moran of CyberStorage Systems.

    “Most implementations of RAID level 0 will be on workstations doing production or outputting to proofers, imagesetters and direct-to-plate. These systems usually consist of two or four disk drives with either software or a mix of hardware or software products,” Moran suggests. “RAID 3 or 4 is implemented with large configurations consisting of multiple drives from five to over 100, with capacities ranging from 10GB to over 1.5TB.” Currently, CyberStorage offers

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