- Complete power failure of the entire data center
- Power failure in specific zones or racks
- Power failure in specific power distribution units (PDUs)
- Power failure in specific servers
- Network failure in the entire data center
- Network failure in specific switches or routers
- Network failure in specific VLANs or subnets
- Hardware failure of specific servers, storage devices or network devices
- Application crash on specific servers or clusters
- Database crash on specific servers
- Database corruption on specific servers
- Storage device crash or data corruption
- Load balancer failure
- DNS outage or misconfiguration
- Environmental failure, such as temperature or humidity sensor failure or alarm
- Fire suppression system activation
- Water leak detection system activation
- Physical security breach or alarm
- DDoS attack or other security threat
- Malware infection or other security threat
- Server or application misconfiguration
- Operating system or firmware upgrade failure
- Backup and recovery system failure
- Disaster recovery system failure
- Virtualization platform failure
- Cloud service outage
- Third-party service outage or disruption
- Network bandwidth saturation
- Storage I/O bottleneck
- Network latency and packet loss
- High CPU or memory utilization
- Authentication or authorization failure
- Network topology change
- Virtual machine migration
- Software upgrade or patching
- Disk I/O failure or bottleneck
- File system corruption or failure
- RAID array failure
- SAN or NAS device failure
- Application load testing
- Database load testing
- Network load testing
- Storage load testing
- Stress testing
- High-availability cluster testing
- Disaster recovery testing
- Business continuity testing
- Live migration testing
- Security penetration testing
- User acceptance testing.
By testing the failover process for a wide range of scenarios, data center operators can ensure that their systems are resilient and can quickly recover from failures to minimize downtime and data loss.
