How should the architect implement database high availability in an Oracle database?

Oracle Real Application Clusters (RAC) provides active-active high availability and scalability across multiple database instances accessing shared storage, which is a different architectural approach than FailSafe's active-passive clustering.

Oracle Data Guard focuses on disaster recovery and maintaining one or more standby databases for failover, typically to a geographically separate location, rather than local active-passive clustering for immediate high availability within a local cluster.

Oracle FailSafe is a high-availability solution that integrates with Microsoft Cluster Service (MSCS) to protect Oracle databases, applications, and other services on a Windows platform. It enables automatic failover of an Oracle database instance to another node in a cluster, ensuring continuous operation.

Oracle Automatic Storage Management (ASM) is a storage management solution for Oracle database files that improves performance and reliability of storage but does not provide database instance or application-level high availability on its own.