Database Check on Incremental Log-only jobs

Hi there,

My customer has a document database on SQL 2008, with 480GB of size.

Full backups run daily, taking about 8 hours (it first does a physical check, then backup, then verify). This process is so intensive that we cannot do those backups during the day, because user complain with performance issues.

That database is set to Full recovery Method, meaning BE has to manage its logs.

Now the question: If I create an incremental, log-only job at noon, do I have to do a physicial check? will it check the whole database as the full backups? I'm worried about disrupting users, eventhough it's lunch time.

Thanks,

Marco.