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Altair's avatar
Altair
Level 4
13 years ago
Solved

Troubleshooting incremental backups

Hi,

We have a full/diff/incremental backup scheme where we run a full backup on the first Friday of the month, differential backups on other Fridays, and incremental backups Mon-Thurs.  This all works fine, except our daily incremental jobs are much larger than we expect (150-200GB when we're expecting maybe 15-20). What steps can we perform to determine what is causing such big incremental backups?

Thanks!

  • As previously advised, the archive bit method does not work with Linux machines.  You got to use the modified time method.

    When you use the modified time method and is using SEP, you got to do a registry edit.  Otherwise your incremental/differential backups will become full backups.  See my blog below

    https://www-secure.symantec.com/connect/blogs/incremental-backups-become-full-backups

    You should always use the backup scheme which makes restore the simplest first.  If you have the time and resources,  do full backups everyday.  Otherwise, do full + differential.  Lastly, full + incremental.