Backup by file extension

I'm not sure if this will work, would have to check the Admin Guide, but try to use directives, something like:

+skip: *.*

+always: *.jpg

I have seen the "always" option mentioned in other articles, but my understanding is that "always" forces the files to get backed up regardless of the backup type, so even unchanged files will get backed up during an incremental. Since the jpg files tend to be large, I don't want to back all of them up every day, just a full once a month with incrementals daily and differentials weekly.

I guess the option here is test if “skip” and “always” work together. I they work, at least you have how to create a full backup that will include all (and only) the jpg files.

As you said the jpg backup is for DR purposes only, one way is to do a full that runs every day and have a short retention period.

I really believe that if the jpg files have to be restored in a DR situation, and you’re going to do full/incr/diff backups, they should be included in your backup procedures as any other regular files, as they seem to be important. I don’t see a lot of gain in terms of network traffic and tape usage just to split your backup into regular and jpg.