You need to be sure to save the following files. With these files you can recover even if the database is lost.
/Server/tomcat/conf/server.xml
/Server/agent-cert.ssl
/Server/server-cert.ssl
Then, be sure to regularly export all of your policies and configs and store them in a safe place so you can import them back into a new database in case the database is completly lost. There is nothing worse in a CSP recovery than having to recreate all your policies.
Be sure to do regular full database backups, with incremental (tranaction log) backups in between the full backups and store them on a different drive or backup server.
Here are a couple of links to CSP disaster recovery articles. Not that these also apply to the newer 6.x Data Center Security (the new name for CSP)
http://www.symantec.com/business/support/index?page=content&id=TECH182047
http://www.symantec.com/business/support/index?page=con.tent&id=HOWTO42154