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deduplication
(redirected from de-duplication)

    Also found in: Dictionary/thesaurus, Wikipedia 0.02 sec.
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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com (Staff) IBM said it has added asynchronous data replication to its de-duplication appliance, which allows remote backup and restore between ProtecTIER boxes.
IBM adds replication to de-duplication by Network World Middle East
EMC has scored another victory over storage rival NetApp by purchasing Data Domain, a merger which widens the technological gap between the companies in the fast-growing data de-duplication market.
EMC distances rival NetApp by Computer News Middle East
HP is transforming data protection with its new data de-duplication solutions.
Disk-based backup by Health Management Technology
 
 
 
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