Forum Discussion

user022013's avatar
user022013
Level 4
11 years ago

Using NetBackup EV Agent and NetApp for open partition backups - extremely slow

Hi All gurus,

Hoping someone out there can clear some muddy waters for me.

I have NetBackup 7.5.0.7 master/media/client environment which I use to backup Enterprise Vault 9.0.5 Open Partitions with.  The Open Partitions reside in CIFS shares on Netapp running 7 Mode.

When backing up the Open Partitions using the EV Agent backups are dismally slow - barely breaking the 1Mb/sec mark.  It doesn't seem to matter where the backups are run to either.  I may gain some speed but not enough to make a noticeable difference.

I backup the Closed Partitions using NDMP and see speeds of over 50Mb/Sec.

Can someone tell me why the EV Agent backups run so slowly?

I do not need an alternative solution as I am aware the alternatives.  I just want to know why the EV Agent backups are so slow.

Thank you.

 

7.5
Agent for Enterprise Vault
Backing Up
Backup and Recovery
NetBackup
Troubleshooting
Windows Server (2003-2008)
  • Will_Restore's avatar
    Will_Restore
    11 years ago

    Open Partitions reside in CIFS shares

    That's the bottleneck.  EV Partitions on local drives are slow; CIFS shares really slow.

     

    I backup the Closed Partitions using NDMP and see speeds of over 50Mb/Sec.

    That pretty much confirms it.

     

3 Replies

Sort By
  • RiaanBadenhorst's avatar
    RiaanBadenhorst
    Level 6
    11 years ago

    Its not really the agent its the nature of the files. If you back the open (or closed) partitions up with a Windows-NT policy you'll see the same speeds. Its the curse of many little files.

     

    But it very slow in your particular case. Might be good to play with the buffer settings and see what the best performance is you can get out of it. Alternatively you could use the scripts and back it up with Accelerator if you have a dedupe license/storage.

  • watsons's avatar
    watsons
    Level 6
    11 years ago

    To get down to where the bottleneck is, use the bptm & bpbkar logs to determine possiblities of cause: 

    http://www.symantec.com/docs/TECH18422

  • Will_Restore's avatar
    Will_Restore
    Level 6
    11 years ago

    Open Partitions reside in CIFS shares

    That's the bottleneck.  EV Partitions on local drives are slow; CIFS shares really slow.

     

    I backup the Closed Partitions using NDMP and see speeds of over 50Mb/Sec.

    That pretty much confirms it.