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Vol. 8 Num. 2 April 2009

Data virtualization turns less into more

Less physical data living and moving over our plumbing means we can have more virtual instances of that data, which drives even more value. By Steve Duplessie Data virtualization, which is a virtual instance of data instead of a physical one, is perhaps the most interesting means of gaining efficiency throughout the entire spectrum of IT operations. But people often overlook that data is the reason why the infrastructure exists to begin with. Therefore, solving inefficiencies directly at the data layer will often have the most significant return on effort and investment. Deduplication, thin provisioning and snapshots are examples of techniques that dramatically reduce or eliminate the true physical issues associated with data, and continue to provide unfettered "virtual" access. Consider data deduplication. Data is duplicated time and time again (pushing the capacity limits of all infrastructures and taxing operating processes), often for perfectly valid reasons. However, it has an exponential negative impact on the backup, ...

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