Can you recommend any specific sources where DBAs can learn more about disaster recovery?
Microsoft provides lots of information about disaster recovery on its website. SQL-Server-Performance.com has a number of good articles on backup/recovery and disaster recovery. Also, there are other SQL-specific sites which provide useful information. There are also a number sites and journals/magazines that provide information about disaster recovery in general.
Is there anything else you would like to add?
Backup/Recovery and Disaster Recovery should be taken seriously by businesses of all sizes. In many organizations, it is pushed to the bottom of IT to-do list. If you don’t have a proper disaster recovery plan today, start immediately in a small way and expand it over time.