exchange 2010 db backup with circular logging and dag

I have circular logging enabled as we are doing exchange native data protection. however i have a need to make a tape backup of all databases using traditional means. I have to run the backup now and don't want to disable circular logging as i'd have to remount the databases causing a little outage.

can i run the backup anyway without it impacting the data? we just need it for point in time backup.
or do i have to turn off circular logging first?


exchange 2010 sp2
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deeburpAsked:
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Minoru7Connect With a Mentor Commented:
I would also mention that it's generally suggested not to use circular logging for an extended period of time, as it can hamper your ability to replay the logs back to an earlier time.  Generally, the logs are cleared during the backup process, so as long as you have regular scheduled backups occurring, circular logging shouldn't be necessary.
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Minoru7Connect With a Mentor Commented:
You don't need to turn off circular logging if you're doing a Full backup.  Circular logging should not be enabled if you plan on doing Incremental backups of Exchange, as the logs are necessary in this scenario.  Since you said you're doing point-in-time backups, I'm assuming you're doing a Full backup.  In that case, circular logging can stay on.
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