Separating data and transaction log

If you do not mirror your database devices, another method to protect data is to keep data and transaction logs separate. If a database device fails, you can recover by loading from the most recent database backup and applying the transaction log backups from the time of the database backup until the time of the failure.

To separate data and transaction logs, create multiple database devices before creating a database. When you create the database, you can specify that the space you are allocating on one or more devices is for log only. Adaptive Server automatically makes any other devices allocated for the database into data-only devices.