Business Continuity Planning
BCP development, disaster recovery, backup strategies, and resilience.
Overview
BCP ensures critical functions continue during disruptions.
BCP Framework
Architecture Diagram
+-------------------------------------+
| Business Impact Analysis |
+-------------------------------------+
| Recovery Strategies |
+-------------------------------------+
| Plan Development |
+-------------------------------------+
| Testing & Maintenance |
+-------------------------------------+
Business Impact Analysis
| Function | RTO | RPO | Priority |
|---|---|---|---|
| 4 hours | 1 hour | Critical | |
| ERP | 8 hours | 4 hours | Critical |
| Website | 2 hours | 0 hours | Critical |
| HR System | 48 hours | 24 hours | Medium |
Recovery Metrics
- RTO (Recovery Time Objective) β Maximum downtime
- RPO (Recovery Point Objective) β Maximum data loss
- MTD (Maximum Tolerable Downtime) β Absolute limit
Backup Strategies
# 3-2-1 Rule
# 3 copies of data
# 2 different media types
# 1 offsite backup
# Incremental backup
rsync -avz --backup /source/ /backup/
# Full backup
tar -czf backup_$(date +%Y%m%d).tar.gz /source/
Disaster Recovery Sites
| Type | RTO | Cost |
|---|---|---|
| Hot site | Minutes | <MathBlock tex=\ /> <MathBlock tex=\ /> $ |
| Warm site | Hours | <MathBlock tex=\ /> $ |
| Cold site | Days | $ |
DR Plan Template
# Disaster Recovery Plan
## 1. Activation Criteria
- Natural disaster
- Cyber attack
- Infrastructure failure
## 2. Roles & Responsibilities
- DR Coordinator: Overall coordination
- Technical Lead: System recovery
- Communications: Stakeholder updates
## 3. Recovery Procedures
### Priority 1: Critical Systems
1. Activate backup site
2. Restore databases
3. Verify data integrity
### Priority 2: Important Systems
1. Restore file servers
2. Enable email
3. Test functionality
## 4. Communication Plan
- Internal notifications
- Customer updates
- Vendor coordination
Testing Types
| Type | Description | Frequency |
|---|---|---|
| Checklist | Review procedures | Quarterly |
| Tabletop | Discussion exercise | Semi-annually |
| Parallel | Test at DR site | Annually |
| Full | Complete failover | Annually |
Practice
Develop a DR plan for a web application with RPO/RTO requirements.