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deduplication
(redirected from data de-duplication)

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deduplication
A method for compressing data by storing only changes to the original data. For example, when a document is created, it is stored as a regular, complete file. When changes are made, deduplication stores only the data that has been modified in a subsequent file with indexes to the original. The changes may be identified by bytes or blocks.

In file deduplication, only one copy of the file is stored even though it may be referenced from many sources. For example, if the same attachment is used in several e-mail messages, the second and subsequent messages are changed to link to the original attachment rather than duplicating it each time.
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lt;p>While not unique -- Data Domain, Sepaton and FalconStor are among the many companies offering data de-duplication appliances and VTLs -- Diligent's ProtectTIER was the first de-duplication VTL on the market when it was released in 2005.
IBM adds replication to de-duplication by Network World Middle East
HP is transforming data protection with its new data de-duplication solutions.
Disk-based backup by Health Management Technology
Data de-duplication technology is certainly the hottest thing in the world of storage right now, but what impact is it likely to have on the way IT managers buy storage in the future?
De -duplication and its impact on storage strategies by James, Chris / Software World
 
 
 
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