A cluster design in which a production system is mirrored by a complete disaster recovery system supports production applications that require no data loss and minimal downtime.
High Availability and Disaster Recovery Parameters
- Downtime: Minimal-to-zero
- Data Loss: No data loss
Typical Use Cases
- Mission-critical enterprise applications
- Customer-facing systems
Landscape Design
- Clustered environment
- Redundancy in all tiers; no single point of failure
- Environment replica in separate disaster recovery environment
- Online full backup
- Online incremental backup
- Online synchronous mirroring
- Client database backup
- Frequent database snapshots
- Rolling maintenance
- Active system health monitoring
Installation Scenarios to Implement
- Simple Load-Balancing Cluster, installed as both production and recovery systems, or,
- Standard Microsoft Failover Cluster, installed as both production and recovery systems