Deduplication Ratio 0.0%
Hello,
we have client side deduplication enabled and on the surface all looks well, we ran it for the first time this weekend and it completed.
however looking at the job log it says ...
In very simplistic terms, the dedup process chops up a file and compare the chunks to what is stored in the dedup device. If the chunk is found, it would not be stored. The chunk that is in the dedup device can be from anything, even the file that is currently being backed up.
Copying a file and making small changes to a file does not mean that the copies will be dedup'ed. For example, you have a file with this content
1234567890qwertyuiop
and this is stored in the dedup device as chunks like this
12345 67890 qwert yuiop
Another user edit copy this file and insert a A
A1234567890qwertyuiop
This file will be stored as
A1234 56789 0qwer tyuio p
You can see that the data chunks from the two files are different. Hence, there is no dedup.
