Deduplication dramatically improves the value proposition of disk-based data protection as it eliminates the redundancy typically seen in secondary storage processes. The use of deduplication will drive further backup-to-disk adoption and deliver associated performance and reliability benefits.
Selecting a strategy for data deduplication requires consideration of several factors in order to avoid surprises later. Clearly understanding how deduplication works—especially in conjunction with other requirements such as performance, ease of use, and offsite copy creation—should go a long way toward selecting and designing a solution that delivers maximum business, operational, and financial benefits.
Deduplication has been more popularly deployed in target storage hardware, including virtual tape libraries (VTLs) and storage appliances; however, recent introductions by backup vendors have shifted the spotlight. How do hardware and software approaches differ? What should be considered when evaluating solutions?
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