The backup window of opportunity you have available often determines when you can back up a database. For example, a database that is heavily used during the work day but used little after 6 p.m. gives you a 12-hour or 13-hour, nightly backup window of opportunity. In contrast, a database that is used heavily 24 hours a day, Monday through Friday, but not used on weekends gives you a two-day, weekend backup window of opportunity. In either case, you must adjust your backup strategy to accommodate the backup window of opportunity available to you.
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