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anasser's avatar
anasser
Level 4
15 years ago

Netbackup Synthetic Full backups


Hello All,

One small and good question,


I am planning for Synthetic backups, I know the process how it works but one thing I am unable to understand is as Synthetic backup is nothing to do with the client, For example sunday regular full backup then mon-fri Incrementals, Do I need to have all these backup medias in the library for synthetic backups.? Because we usually send medias offsite next day of the backup.

Thanks
Nasser
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  • Marianne's avatar
    Marianne
    15 years ago

    Quick answer: yes.
    A full Synthetic backup is in essence a consolidated duplication of last full and subsequent incrementals.
    The need for original backup copies is a show-stopper for users who send tapes off-site on a daily basis.

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  • Kalejo's avatar
    Kalejo
    15 years ago
    I'm new to Netbackup, and I could do with some advice on how to set up the policy for my companies backup please.
    The company has asked me to setup a backup to cover the following.

    We have 1 Netbackup Master backup/Media Server, with a standalone Storagetek drive which used HCART LTO tapes, we have 2 Netbackup clients that require backups, I cant put in the same policy because the directories that require backups on each server are in different. 

    Incremental on three tapes to cover 6 days
    Monday  - Saturday
    1) Daily 1 Tape to be used on Monday's and Thursday
    2) Daily 2 Tape to be used on Tuesday and Friday
    3) Daily 3 Tape to be used on Wednesday and Saturday

    Weekly Full Backups will use 3 tapes on the following a number of writes Weekly 1tape will be removed an put in a Volt for Archives a new tape will be introduced to the tape Pool.

    1) Weekly 1
    2) Weekly 2
    3) Weekly

    Thanks in advance.


    Regards.



    John.



  • David_McMullin's avatar
    David_McMullin
    Level 6
    15 years ago

    make two copies

    If you have to send one off site, you will need to make two copies and keep one on site - suggest you use disk or VTL for that.

    If you can make both copies at once, you will save some time...
  • anasser's avatar
    anasser
    Level 4
    15 years ago
    Thank you very much Marianne, So you mean I need to have full+Incremental backup Media's Onsite to run a Synthetic Full
  • Marianne's avatar
    Marianne
    Level 6
    15 years ago

    Quick answer: yes.
    A full Synthetic backup is in essence a consolidated duplication of last full and subsequent incrementals.
    The need for original backup copies is a show-stopper for users who send tapes off-site on a daily basis.