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March 10th, 2015 02:00
ARC-Serve vs Data Domain on De-duplication
De-duplication in Arc-Serve is very limited to the type of backup say, e.g. Incremental and full requires to be kept in different buckets of volume, i.e. De-duplication for incremental backup is different and kept in a different bucket and De-duplication for full backup is different and kept in a different bucket. This is for ARC-Serve to differentiate which one is what type of backup.
Thus occupying more space than required. It also takes a complete full backup, not like current backup solutions.
Question is whether NetWorker or Avamar also use the same methodology to differentiate between different types of backups?
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ble1
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March 10th, 2015 04:00
They can differentiate between different backup levels (full, incr, level X, synthetic), but this does not require bucket approach. Further, in relation to DD, this all does not matter because DD uses global file system and global/local compression meaning all your buckets are handled the same manner and DD keeps global de-dupe index. What may matter is only if specific data encapsulation of the ArcServe is making de-dupe more different and if bucket approach adds to it. With NW (and Avamar) there is no such thing and you are worry free.