A white paper on failover considerations for WebSphere Application Server, "Failover and Recovery in WebSphere," is available in PDF format in the WebSphere Developer Domain document library at http://www7.software.ibm.com/vadd-bin/ftpdl?1/vadc/wsdd/pdf/modjeski.pdf.
"Failover and Recovery in WebSphere" provides guidelines on enabling a highly available WebSphere Application Server installation. It addresses issues such as configuring Web servers, Web containers, EJB containers, application databases, administrative databases, administrative servers, highly available databases, and other prerequisites.
The WebSphere Developer Domain provides documents on best practices, WebSphere Education information, and the like. It also provides downloads, forums, and other resources for the developer community. The main URL for the WebSphere Developer Domain is http://www.ibm.com/websphere/developer.