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Netbackups are running very slow.

Sam_sd93
Level 3

Hi,

 

I've configured solaris 10 machine as netback master server running 7.5.0.4 version and having 1GB NIC and I've unix clients with backup client installed with same NIC speed. My concern is when I initiate the backups they are running very slow @ 7kb/sec and taking 12hrs to backup 300GB of data. Much appriated for the quick response.

6 REPLIES 6

Nate_D1
Level 6

Can you post the details of the job? Are you seeing any errors or warnings or is it finishing with status 0? You might want to enable the bpbrm & bptm logs refer to http://www.symantec.com/docs/TECH18422

revarooo
Level 6
Employee

Praveen,

Let's see the bpbkar log (from the client) and the bptm log (from the media server) that will give us a clue.

I bet the issue is the network!

Also how many files are you backing up, lots of small files will be a problem on a standard backup and flashbackup would be more preferable in this situation.

 

mph999
Level 6
Employee Accredited

I bet the issue is network as well ... or buffer tuning ...

Could also be useful to see the details of a sklow job from activity monitor that has completed successfully.

 

Martin

Omar_Villa
Level 6
Employee

Is the master a media server too? are the clients using a dedicated NIC for backups or everything is going through production NIC's?

Marianne
Moderator
Moderator
Partner    VIP    Accredited Certified

Step 1:
Determine client's ability to generate data stream. Do bpbkar test on client.
See NetBackup™ 7.0 - 7.1 Backup Planning and Performance Tuning Guide  http://http://www.symantec.com/docs/DOC4483 for details.

Step 2:
Determine network speed.
Find a file in step 1 filesystem that is at least 1Gb and ftp to master/media server.

Only if above steps give you good performance look at buffer tuning on master/media server. Details in performance tuning guide.

jim_dalton
Level 6

Got tape drives ?(I cant tell) , if so have you tuned the drive blocking params: makes a huge difference.

What is the data profile? Millions of small files vs 3 huge ones. The latter will be much more rapid.

Run a local test ie master server as the client as well as the master/media: this way you remove the network from the picture. 

You can even run synthetic backups where the data are generated by netbackup internally on the client, that removes the clients disk from the picture.

Jim