What's the difference between deduplication and compression?
A: Deduplication
is an intelligent compression process in which large common data segments are
replaced with far smaller indexes that point to one common single instance of
the common data segment. Compression is
the process of replacing repeated bit patterns at the byte/word level with an
index or count of the bits that were repeated.
Compression is only aware of a few bytes of data, deduplication is aware
of weeks, months and years worth of data patterns.
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