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Netapp SNAPMirror and Backup Exec 2012

Created: 16 Jan 2013 • Updated: 16 Jan 2013 | 1 comment

I'm backing up my primary Netapp filer using NDMP to a tape library. I have Daily backups configured during the week and full Weekly backups over the weekend. Everything was working well until I setup a SNAPMIRROR relationship from a Branch office to this site. The data being mirrored over is about 3TB and when included in the selection list is being backed up as if it was a full backup during a daily backup job. I suspect this is due to the fact the archive BIT is not being reset at the source and snap mirror is a readonly copy.

I see some people talking about different netapp NDMP level options. Do I need to set up different jobs from the rest of my CIFS backups to deal with this SNAPMirror data? Can someone who has done this before provide me some direction.


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Colin Weaver's picture

NetApp do not use Archive bits that is a function provided by the NTFS file system.

The NDMP levels are Netapp way of providing a form of Incremental or differentila except you have to cerate a series of jobs to do incremental backups


Level 0, Level 1, Level 1, Level 1, Level 1, Level 1 (and repeated with new Level 0) = same as full + 5 differential backups

Level 0, Level 1, Level 2, Level 3, Level 4, Level 5 (and repeated with new Level 0) = same as full + 5 incremental backups

The way it works is:

Level 0 is everything

Level 1 is everything since last Level 0

Level 2 is everything since last level 1 etc

BTW I am not sure whether Symantec does any validation testing of support for SnapMirror Configurations