More white papers on high availability and DR for your data centre are available!
High Availability in the Data Center
http://www.sun.com/servers/sparcenterprise/SPARCEnt-HA-Final.pdf
High Availability and Disaster Recovery
http://www.sun.com/servers/sparcenterprise/APL-HA-DR-SS-3.pdf
Webcast: Business Continuity and Disaster Recovery by Hal Stern, SVP
System Engineering
http://www.snpnet.com/customer_pub/BCDR/index.html