Disaster Recovery Plan Brochure Example

Standard Operating Procedure: Disaster Recovery (DR) Execution

Document ID: TR-DRP-001
Effective Date: 2023-10-27
Version: 2.1.0
Review Cadence: Semi-Annual (Bi-annual)

1. Executive Summary & Purpose

This SOP dictates the standardized recovery protocols for Template Registry's critical infrastructure following a catastrophic service disruption. The objective is to restore Primary Operations (RTO < 4 hours) and ensure data integrity (RPO < 15 minutes) while maintaining secure, immutable environment isolation.

2. Scope & Prerequisites

• Scope: All cloud-native production environments, customer-facing API endpoints, and primary database clusters.
• Required Tools:
  • Terraform (Infrastructure as Code)
  • HashiCorp Vault (Credential Management)
  • AWS/GCP CLI (Authenticated via IAM Role)
  • Slack/PagerDuty (Incident Communication)
• Prerequisites: Validated off-site encrypted backups (S3/GCS); verified cross-region replication status; authorized Incident Response (IR) team access.

3. Roles & Responsibilities (RACI)

4. Step-by-Step Procedure

Phase I: Incident Validation & Triage

• Verify system telemetry against established anomaly baselines.
• Initiate "Incident Command" communication channel.
• Determine DR trigger (Full failover vs. partial service restoration).

Phase II: Environment Provisioning (IaC)

• Execute terraform apply to deploy clean compute nodes in the secondary DR region.
• Validate identity provider (IDP) connectivity to the new infrastructure.
• Conduct health checks on load balancers via curl or automated synthetic probes.

Phase III: Data Restoration & Integrity Check

• Initiate database snapshot restoration from the latest RPO-compliant checkpoint.
• Perform checksum verification between source (corrupted) and target (restored) data sets.
• Apply transactional logs to bridge the delta between restoration point and crash timestamp.

Phase IV: Traffic Cutover

• Update DNS records (Route53/Cloudflare) to point to the DR environment load balancer.
• Monitor traffic ingress latency and error rate (5xx spikes).
• Verify application stability post-cutover.

5. Quality Assurance & Pro-Tips

• Metric Thresholds:
  • RTO (Recovery Time Objective): < 240 minutes.
  • RPO (Recovery Point Objective): < 15 minutes.
  • Error Budget: Cannot exceed 0.01% during reconciliation.
• Pro-Tips:
  • Immutable Backups: Always utilize WORM (Write Once, Read Many) storage to prevent ransomware from encrypting recovery points.
  • Infrastructure Drift: Run terraform plan at the start of every quarter to ensure code matches reality; a DR event is not the time to debug drift.
  • The "Human" Factor: Always print a hard copy of this SOP. If the network is down, you cannot access your digital DR documentation.

6. Frequently Asked Questions (FAQ)

Q: How do we determine if a failover is necessary vs. a local restart?
A: If the mean time to recover (MTTR) via a local restart exceeds 30 minutes, or if data integrity is compromised, initiate full DR failover.

Q: Can we revert the failover once the primary region is back online?
A: Only after a "sync-back" phase. You must capture the state of the DR region, perform a delta migration back to the primary region, and schedule a maintenance window for the final cutover.

Approved by: Julian Vance Chief Architect, Template Registry