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Firms continue to face multiple challenges in managing large amounts of data across a tiered storage infrastructure. Data migration between storage tiers is recognized as one of the most complex challenges. The authors review factors that can cause storage managers to develop ineffective data migration practices. The authors describe a prototype decision support tool that managers can use to better understand when to migrate data to different tiers. Effective data migration practices are critical to balancing information value, risk, and information management costs.
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