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liuyang's avatar
liuyang
Level 6
10 years ago

Configure client side deduplication

Hi, our master server is NBU 7.6.0.3. It is also the only media server. There are no other media servers. We have a few clients which are all Windows clients to back up. The backup LAN is only 100MB/s. We are thinking to use client side deduplication on all the clients. 

I did some research and found the link below:

http://www.symantec.com/business/support/index?page=content&id=HOWTO70639

It seems there are a few configurations need to be done and some are optional. 

My question is:

What is the best practise for client side deduplicaiton? When shall we do those optional configurations?

Thanks in advance.

Backup and Recovery
Configuring
NetBackup
Windows Server (2003-2008)
  • RiaanBadenhorst's avatar
    RiaanBadenhorst
    10 years ago

    Are you using MSDP/NBU appliance storage in your environment? If so, then all you need to do is to do ths

    http://www.symantec.com/business/support/index?page=content&id=HOWTO70503#v27497507

     

    If you're not using MSDP/NBU appliance storage then you need to get that done first.

  • RiaanBadenhorst's avatar
    RiaanBadenhorst
    10 years ago

    As said in previous reply

     

    http://www.symantec.com/business/support/index?page=content&id=HOWTO70503#v27497507

     

    No limitations / restrictions.

     

    If the clients have many files (>1000000) you could enable accelerator as well.

  • sksujeet's avatar
    sksujeet
    10 years ago

    http://www.symantec.com/docs/TECH199723

    With NetBackup clients at 7.5.0.x, multistreaming is supported, but ONLY for a maximum of 2 streams..

  • watsons's avatar
    watsons
    10 years ago

    You need to give us more specific of "what is not working as expected", any error code or message?

    If it's just taking too long, it could mean the client you setup for deduplication is not up to the system requirements, things like:

    - Client being a 32bit OS.
    - RAM/CPU/disk performance on client. If it only has 4GB RAM or an Intel Core 2 Duo or below, that's probably not good enough.

    Note that having a client-side deduplication means that you are having a deduplication engine running on the client itself, before sending the dedup data over to media server. So the client ought to have the "power" to run the deduplication. 

    If all the above are good, client-side dedup should be fine. Well.. first backup might be slow, but subsequently with the deduplication it will get faster over time (unless more new data are coming in).

    For logs, you can check nbostpxy & bpbkar on the client, increase to verbose=5 if needed.

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  • liuyang's avatar
    liuyang
    Level 6
    10 years ago

    What shall I configure from client side, from master server/media server side? 

  • sksujeet's avatar
    sksujeet
    Level 6
    10 years ago

    It seems you don't have the dedup device to get the client deduplication

    Please tell us about your environment.


    Do you have MSDP, PDDO or OST configured.If your deduplication device supports client-side deduplication, a remote computer deduplicates data and then sends only the unique data directly to a deduplication disk storage device or an OpenStorage device.

    If you don't have these devices you will not be able to deduplicate the data.

  • RiaanBadenhorst's avatar
    RiaanBadenhorst
    Level 6
    10 years ago

    Are you using MSDP/NBU appliance storage in your environment? If so, then all you need to do is to do ths

    http://www.symantec.com/business/support/index?page=content&id=HOWTO70503#v27497507

     

    If you're not using MSDP/NBU appliance storage then you need to get that done first.

    • Ankit_Uttam's avatar
      Ankit_Uttam
      Level 1
      8 years ago

      what ever links are you referring are not opening. so Please post the correct URL which should be open with the correct docs.

      • Marianne's avatar
        Marianne
        Level 6
        8 years ago

        This post is 3 years old and Veritas has in the meantime split from Symantec.

        This is why the Symantec URLs are no longer working.

        Client-side deduplication is enabled in Host Properties -> Master Server (Select master) -> Client Attributes :
        Add / Select Client name.
        Deduplication location is towards the bottom of the screen.

        This is described in Admin Guide I.

        If you have more questions, please start a new discussion.

         

  • liuyang's avatar
    liuyang
    Level 6
    10 years ago

    Our master server (also the media server) is NBU 5230 appliance. 

  • liuyang's avatar
    liuyang
    Level 6
    10 years ago

    What I would like to know is:

    What configuration should I do to enable client side deduplication from client side and master server (media server) side? Any limitations or restrictions?

    Thanks.

  • RiaanBadenhorst's avatar
    RiaanBadenhorst
    Level 6
    10 years ago

    As said in previous reply

     

    http://www.symantec.com/business/support/index?page=content&id=HOWTO70503#v27497507

     

    No limitations / restrictions.

     

    If the clients have many files (>1000000) you could enable accelerator as well.

  • liuyang's avatar
    liuyang
    Level 6
    10 years ago

    Thanks for your answers. Will multi stream still work when client deduplication is enabled?

  • sksujeet's avatar
    sksujeet
    Level 6
    10 years ago

    http://www.symantec.com/docs/TECH199723

    With NetBackup clients at 7.5.0.x, multistreaming is supported, but ONLY for a maximum of 2 streams..

  • Marianne's avatar
    Marianne
    Level 6
    10 years ago

    Hopefully you have over the last week enabled client-side dedupe (and probably accelerator as well ) and can now share the outcome?