The articles used in designing different backup and restore stategies for Achieving RTO, RPO, SLA are:
Different Backup options in SQL Server 2008
Different Restore options in SQL Server 2008
SQL Server 2008 Recovery Models and Transaction log usage
Please consider RTO and RPO with SLA(Service Level Agrement) to define the amount of data loss tolerable in case of disaster and how much time is tolerable to get the services up and running.