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Vol. 10 Num. 4 June 2011

Pare down primary storage

There’s been a lot of talk lately about how data deduplication is moving from backup to primary storage. Dedupe’s great for trimming primary data stores, but there are other technologies that can do the job. Standard in many backup and archival products, data reduction is now becoming more prevalent for primary storage. The main drivers for this phenomenon are measurable cost savings from having to buy fewer disks and reducing annual support fees, to lowering operational expenses related to storage management. Data reduction may also have a pleasant impact on data storage performance: by not having inactive data occupy valuable high-performance storage, overall storage and application performance may get a welcome performance boost. In a typical enterprise, according to Storage Networking Industry Association (SNIA) research, 80% of files stored on primary storage haven’t been accessed in the last 30 days; the same report asserts that inactive data grows at more than four times the rate of active data. With these facts in mind, ...

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