Differential Incremental Backup
Updated: 21 May 2010 | 5 comments
Hi,
I'm having some confusion about differential incremental backup. Here is the senario of my environment:
(1) Differential incremental backup on path /u01/archive
(2) Move everything in /u01/archive to /u01/archive/old after backup is
successful.
Backup selection list: /u01/archive
The next day of my differential incremental backup, will it backup files under /u01/archive/old? Those files were already backup yesterday but currently in the different location after the moving.
Thanks.
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Comments
Hi Jess,
By default, NetBackup uses only the file's mtime to determine if that file should be included in an incremental backup, http://support.veritas.com/docs/200644 (i.e. it should not be backup again). But you can change the default behaviour.
Depending what behavior u want, u can use TiR (True Image Restore) as an option of your policy, and With Move Detection under TiR.
Move Detection makes the detection of files modified for incremental backups based on INODE and MPATH and not only the MTIME.
You could also stick the /old directory in an exclude list.
Symantec Certified Specialist in Symantec NetBackup 7.0
(NBU 7.1.0.2, ACSLS, DataDomain, NDMP...)
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Hi guys,
Tested on the solution, files that were backup and moved to different location will not be backup in the next incremental. Just like Chia said.
Thanks.
Hi Jess,
Thanks for updating the test result (and the points).
:-)
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