Forum Discussion

Sadfad's avatar
Sadfad
Level 3
8 years ago

EMC Isilon NDMP Backup with multiple streams

Hello,

I have a question about NDMP backup from ISILON with NetBackup.
We use direct attached NDMP. The Isilon has 8 tape drives available. We are looking forward to use all 8 tape drives at the same time to improve speed.
Our problem is that the Isilon has only one filesystem with 150TB. So if we backup this filesystem the policy opens just one stream. Is there any possibility to backup every subfolder under the filesystem with one stream or something like that? 

  • Sadfad's avatar
    Sadfad
    8 years ago

    We found a solution which works fine for us.

    We did it like that:

    SET FILES=[a-fA-F]*/*
    /ifs/data/
    SET FILES=[g-lG-L]*/*
    /ifs/data/...

    That backs up all subdirectories under /ifs/data/ from a-f and A-F in one stream and so on.

  • watsons's avatar
    watsons
    Level 6
    8 years ago

    This is possible, at least from the last time I read from a NBU guide for Isilon filers.

    In your NDMP policy backup selection, setup like this:

    NEW_STREAM
    /ifs/data/project1
    NEW_STREAM
    /ifs/data/project2

    Proivded you already have the subfolders created...

    • Sadfad's avatar
      Sadfad
      Level 3
      8 years ago

      Thank you for your reply. I know it is possible this way but sadly our configuration is /ifs/data/ and there are all the subfolders/shares. There are an amount of 100 subfolders. So with this amount ob subfolders we cannot be sure and have no mechanims to proof that we backup every directory and every new one. And we would have like 100 streams.

      • quebek's avatar
        quebek
        Moderator
        8 years ago

        Hi

        Make use of wildcards characters, here is quotation from NDMP admin guide:

        "Support for wildcards in NDMP backup policy selections: Wildcard characters in regular expressions or directives are valid for streaming and non-streaming NDMP backups. (...)

        Note: Wildcard characters are not supported in releases of NetBackup before version
        7.6. To use wildcard characters in NDMP policy backup selections, both your master
        server and the media servers on which NetBackup for NDMP is installed must run
        NetBackup 7.6 or later."

        ie

        NEW_STREAM

        /ifs/a*

        /ifs/A*

        /ifs/b*

        /ifs/B*

        NEW_STREAM

        /ifs/c*

        /ifs/C*

        /ifs/d*

        /ifs/D*

        NEW_STREAM

        ....

        and so on...

        NEW_STREAM

        /ifs/