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Vol. 7 No. 9 November 2008

Deduplication now focusing on primary storage

IT managers have become as obsessed with reducing the amount of redundant data in their storage as Americans are with reducing their waistlines. But this trend has been focused mainly on secondary storage--backup and archiving apps, where most of the redundant data lives in storage infrastructures. A handful of vendors are trying to take duplicate data out of primary storage even though there's a lot less redundant data in primary (tier 1) storage than in secondary storage. So data reduction ratios in primary storage will be much lower than the 15:1 or 20:1 ratios common when deduping secondary storage. "But you'll be getting a lot more bang for the buck because tier 1 disk is more expensive," says Eric Burgener, senior analyst and consultant at Taneja Group in Hopkinton, MA. But as the use of virtualization increases, more and more virtual machines are running on one physical server. This creates multiple instances of OSes and apps, which in turn will increase the level of redundant data on expensive primary storage. The next ...

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Features in this issue

  • Economy down, salaries up

    by  Ellen O'Brien

    Our sixth annual Storage Salary Survey shows storage salaries are rising overall, and climbing even higher as the number of terabytes managed increases. Experienced storage pros remain in demand but many respondents say that heavier workloads, smaller staffs, longer hours and tighter budgets are all contributing to stress and making the job of managing storage even tougher.

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