| Strategy | Example | |----------|---------| | | N+1 power, RAID storage, redundant network links | | Diversity | Different telecom carriers, cloud regions | | Failover | Active-passive or active-active data centers | | Backup | Onsite + offsite + cloud backups (aligned to RPO) | | Alternative processing | Manual workarounds, cold/warm/hot sites | | Data replication | Synchronous (short RPO) vs. asynchronous |
ISO 27031 is under revision (as of 2025) to align with modern cloud, hybrid work, and cyber-resilience concepts. Always check for the latest edition if pursuing formal certification. iso 27031 disaster recovery
