According to the SMP Support Matrix (linked below), SQL Server 2008 and SQL Server 2008 SP1 are supported for CMS 7.0 SP5, but not SQL Server 2008 SP2 or SQL Server 2008 R2. However, all of these versions are supported for CMS 7.1 SP1.
http://www.symantec.com/business/support/index?page=content&id=HOWTO9965
Does this answer your question?