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02 March, 2008

Storage Deduplication

Starting from this article (in Italian) that's been posted in VMUG Italy Blog.

At Vmworld a new frontier for storage technologies has been presented by some hardware vendors: it's called deduplication (or deduping). With this technology you can save on space used by data on your storage "removing" the duplicates:
  • while writing the data (inline deduplication)
  • after the data has been written (post processing deduplication)

the choice between the two is based on the type of application you are running on the top of the storage (cloning, database, backup,...)

More info in the NetApp whitepaper about deduplication (PDF file)