The roles and responsibilities are mentioned below:
SQL fail-over cluster to provide High Availability for the critical production which includes (Active-Active, Active-Passive and Multi node clusters respective servers
Administration of Windows Cluster and SQL Server Cluster
Configured and Monitored Log Shipping for production environment.
Configured and Monitored Database Mirroring for production environment.
Configured and Monitored Database Always On for production environment
Configuring in Clustering as part of High Availability