03-03-2014 12:47 AM
All my backups are archive bit dependant.
Please let me know what is the difference we are backing up in Differential Inc backup and Cumulative Inc backup, if below definitions are correct.
Please find the attachement.
Thanks and regards,
Bharath Achar
Solved! Go to Solution.
03-03-2014 01:18 AM
and in your screenshot you have combined the both differential and cumulative backups, and that is not the recommended way when backup are using the archvie bit
see the note from Symantec , page number 109 netbackup admin guide volume 1
so that is not the recommended way to taking backup, if you would like to mix both differential and cumulative , go with the backups based on time stamp.
03-03-2014 01:06 AM
Differential Incremental backup is the backup of the files that have changed since the last backup (whether full or incremental backup)
Cumulative Incremental is the backup of all files that have changed since the last full backup (so gets bigger each day until the next full is run)
The archive bit only gets reset when you run the full backup when using cumulative incremental backups
Hope this helps
03-03-2014 01:18 AM
and in your screenshot you have combined the both differential and cumulative backups, and that is not the recommended way when backup are using the archvie bit
see the note from Symantec , page number 109 netbackup admin guide volume 1
so that is not the recommended way to taking backup, if you would like to mix both differential and cumulative , go with the backups based on time stamp.
03-03-2014 01:21 AM
I missed the screenshot but Nagalla is right on that point - never combine the two in the same policy!
That setup is a very strange one - just have you full once a week and either diff or cumulative on the other days but not that mix
03-03-2014 01:39 AM
I addition to above excellent posts, we also see the following on p. 581 of NBU for Windows Admin Guide 1: Table 15-27 Standard backup types
So, if you choose backups based on date/time stamp (Windows Client Settings properties), you can use C Inc and D Inc in the same policy.
03-03-2014 02:39 AM
Great!!!
I gotcha.
Regards,
Bharath