Forum Discussion

Chukwuemeka's avatar
Chukwuemeka
Level 6
13 years ago

Deduplication rate

    hello guys,   what would you say is the compression rate of using deduplication.  (e.g 50% or what)   My backups to a VTL is about 10TB, if i buy 20TB license for deduplication and a ...
7.1.x and Earlier
Backup and Recovery
NetBackup
  • Mark_Solutions's avatar
    Mark_Solutions
    13 years ago

    That really is a "how long is a piece of string" question.

    It all depends on your data type

    If you have a lot of encrypted of hig density multi media files then you may not get much in the way of de-dupe rates.

    If your backups are the run of the usual run of the mill users docuements, SQL and Exchange databases etc. then i have seen 99 and 100% on the second run

    If you do a lot of SQL logs backups then enable de-dupe compression to get any de-dupe on those at all

    There are de-dupe assesment tools available so you may want to ask your Symantec partner for some advice or consultancy to do some testing for you

    Hope this helps

Marianne's avatar
Marianne
Level 6
13 years ago

Please go through the following manuals and URL's as part of dedupe planning deployment:

NBU Deduplication Guide   http://www.symantec.com/docs/TECH127071
NBU Deduplication: Additional Info  http://www.symantec.com/docs/TECH77575
http://eval.symantec.com/flashdemos/products/netbackup/dedupe_calc2/
http://www.symantec.com/docs/TECH159417 
http://eval.symantec.com/mktginfo/enterprise/white_papers/ent-whitepaper-global-dedupe-customer-results_12-2007_13561423.en-us.pdf