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This article is part of the Vol. 7 No. 8 October 2008 issue of CDP 2.0: Finding success with the latest continuous data protection tools
Q: Where and when should we use data dedupe for remote-office backups? A: Data deduplication serves a dual purpose: It reduces the amount of physical storage used for backup data and is a way to replace tape for backups. The decision point is when to use disk as a backup target. Once the need to use disk has been established, dedupe increases the efficiency of disk utilization. A common application for deduplication is in remote offices where tape handling needs to be eliminated because there are no IT skills available. Dedupe then increases the utilization of the more expensive disk storage. Dedupe solutions also reduce the bandwidth requirements for replicating data to a remote location. Other drivers to use disk-based backups include reliability of RAID-based disk storage and the security of not having tapes leave your environment with sensitive data. However, imaging-type data or data encrypted at the source don't benefit much from dedupe. This makes disk-based backups a pricier proposition. --Pierre Dorion, data center practice director, Long View ... Access >>>
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SAS use soars
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Ask the Experts
Where and when should we use data dedupe for remote-office backups?
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There are plenty of good reasons to opt for backup storage as a service, but there are also plenty of questions you should ask before green lighting any move to online backup.
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If your actions will help meet the company's overall green objectives of making more money faster, you'll probably find your status growing along with your budget.
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Most IT departments are split into islands of expertise, like storage, servers and networks. But the time is coming when those disparate groups will have to learn to work together. Network consolidation is just one of the technologies forcing storage pros to build stronger interdisciplinary IT teams.
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