#disaster-recovery #business-continuity #backup #datacenter

Disaster Recovery and Business Continuity for Datacenters

October 31, 2024

1 min read

Disaster Recovery and Business Continuity for Datacenters

Disasters happen. Ensure business continuity with proper DR planning, testing, and execution.

Recovery Objectives

RTO and RPO

RTO (Recovery Time Objective):
  Tier 1 (Critical): < 1 hour
  Tier 2 (Important): < 4 hours
  Tier 3 (Normal): < 24 hours

RPO (Recovery Point Objective):
  Tier 1: < 15 minutes
  Tier 2: < 1 hour
  Tier 3: < 24 hours

Backup Strategies

3-2-1 Rule

3 copies of data
2 different media types
1 offsite copy

Backup Types

# Full backup
tar -czf /backup/full-$(date +%Y%m%d).tar.gz /data

# Incremental backup
rsync -av --link-dest=/backup/previous /data /backup/current

# Snapshot backup
lvcreate -L 10G -s -n data_snap /dev/vg/data

Testing Schedule

Monthly:
  - Backup restoration test
  - Documentation review

Quarterly:
  - Partial failover test
  - Recovery time measurement

Annually:
  - Full DR exercise
  - Complete site failover

Best Practices

Document everything
Define clear objectives (RTO/RPO)
Regular testing
Automate backups
Test restorations
Offsite storage
Encryption

References:

NIST SP 800-34 Contingency Planning Guide
ISO 22301 Business Continuity

Tags:

#disaster-recovery #business-continuity #backup #datacenter