An enterprise web application experienced an unrecoverable infrastructure failure at its primary facility. The incident response team must execute the disaster recovery plan to activate the secondary warm site and minimize service disruption. In what chronological order should the administrator execute the following steps to complete the failover securely while preserving data integrity?
- 1Formally declare a disaster to officially trigger the Business Continuity Plan (BCP) failover protocol.
- 2Apply pending asynchronous transaction delta logs to synchronize database state up to the target Recovery Point Objective (RPO).
- 3Promote the secondary database replica from read-only standby status to primary read-write mode.
- 4Execute automated synthetic health and security checks to validate application stack functionality.
- 5Update external Domain Name System (DNS) A/AAAA records to direct client traffic to the secondary site public IP addresses.
Cevap
The correct sequence starts with declaring the disaster, followed by applying pending transaction logs to reach RPO consistency, promoting the standby database replica to read-write mode, running synthetic validation health checks, and finally updating external DNS records to route user traffic.
The proper disaster recovery sequence balances data protection with operational availability. First, formal disaster declaration initiates the procedure. Second, pending database logs are applied to guarantee data integrity up to the defined RPO. Third, the database replica is promoted to read-write primary status. Fourth, health and security validation checks verify system integrity. Fifth, external DNS records are redirected to route live client traffic to the secondary facility.
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Disaster Recovery Failover Sequence and RPO/RTO Alignment
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