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Overwrite and Duplicate Write to a block

March 25th, 2010
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All writes that go to the same block ID are considered overwrite (write over the same place).

However, duplicate writes are writes that have the same content, they may go to the same block, or they may not.

So, we cannot conclude the number of overwrites is greater than the number of duplicate writes, or the other way around. Generally, it’s much harder to identify duplicate writes than overwrites, because detecting content duplication requires manipulating a much larger amount of data.

Mr. One Z_others

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