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Q about logs in NBU

Created: 02 Feb 2014 • Updated: 07 Apr 2014 | 5 comments
This issue has been solved. See solution.


I have searched for perfect answers about the unified and legacy logs, but i did not find one, please share your knowledge on this.

What is Legacy logs? 

what is Unified logs?

What is the purpose of Unified logs? and advantage over Legacy logs?

what is the benefits we achived using unified logging, becasue in NB v5 we toot backup without unified logs.



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Yogesh.Jadhav's picture


 Legacy logs are the easily readable logs under /usr/openv/netbackup/logs directory which were the only available logs before Unified (VxLogs) which were introudced after Netbackup 6 release. 

Vxlogs are not easliy readable and you will have to use the tool to extract the logs but they are more robust than the legacy logs. The vxlogs directories can be found under the directory /usr/openv/logs/

More details about this -

Thanks & Regards

Yogesh Jadhav
Marianne's picture

In short:

Legacy logs are 'old' processes - normally starting with 'bp'.

Unified logs are for new processes starting with 'nb'.

Read up about these different log types in Chapter 3 of NetBackup Troubleshooting Guide


Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

mph999's picture

Regards,  Martin
Setting Logs in NetBackup:
Chan_backup's picture


I have gone through all the details already, is their anything else which you come accross by your experience, if yes please share.

Marianne's picture

Before you start reading logs, you need to understand which log relates to which NBU process and where they fit in the backup or restore process.

A summarised version of the process flow diagram can be found here: NetBackup 7.x Process Flow

Detailed version along with explanation of each process in Appendix A of the Troubleshooting Guide:

Good information in this article as well: Which Logs need to be created NetBackup

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links