cancel
Showing results for 
Search instead for 
Did you mean: 

Deduplication Ratio

RaghavTuppathi
Level 3

Hi

Please advise how do i get deduplication ratio % in activity monitor when backingup to datadomain ?

accelerator optimization only shows the perfomance.

virtual synthectics enabled in datadomain and tptex has been updated in master server

 

 

3 REPLIES 3

quebek
Moderator
Moderator
   VIP    Certified

Hello

I think this is not doable - that was one of the points we decided to move off DD to NBU appliances - as there I could see the dedup rates in activity monitor... For DD I believe you would need to login to it and check the filesystem deduplication there. I believe you can try to poll more details from it per backup image - but I do not recall how it was made...

Marianne
Moderator
Moderator
Partner    VIP    Accredited Certified

I do not have 1st-hand experience with DD in the same way as @quebek, but my logic says that NBU can only report on dedupe rates if DD is providing this info during the backup job to NBU.

I found this blog where a user explains how he reports on DD dedupe rates:

https://kallesplayground.wordpress.com/2014/06/23/finding-backup-jobs-that-dedupe-badly-in-emc-data-...

HTH

Nicolai
Moderator
Moderator
Partner    VIP   

You can find bad dedupes backup images on Data Domain by connection to the device usinng SSH and running command:

# filesys show compression /data/col1/{DD storage unit name} recursive no-sync

Log output to text file and import into Excel

Alternative take a look at this scripting approach:

https://vox.veritas.com/t5/NetBackup/How-to-get-individual-dedupe-compression-rawspace-rates-of/td-p...