Table of Contents

Disaster recovery planning and procedures for DNS infrastructure.

Recovery Planning

Backup Strategies

  • Zone File Backups - Regular zone data backup
  • Configuration Backups - Server configuration preservation
  • Database Backups - Active Directory integrated zones
  • Automation - Scheduled backup procedures

Recovery Procedures

# Windows DNS backup
Export-DnsServerZone -Name "contoso.com" -FileName "contoso.com.bak"

# Windows DNS restore
Import-DnsServerZone -Name "contoso.com" -FileName "contoso.com.bak"

# BIND9 backup
cp /etc/bind/zones/* /backup/dns/
tar -czf dns-backup-$(date +%Y%m%d).tar.gz /etc/bind/

# BIND9 restore
tar -xzf dns-backup.tar.gz -C /
systemctl restart named

Continuity Planning

Failover Scenarios

  • Primary Server Failure - Secondary server promotion
  • Site-Wide Outage - Geographic failover
  • Data Corruption - Point-in-time recovery
  • DDoS Attack - Traffic redirection

Testing Procedures

  • Regular DR Tests - Quarterly recovery testing
  • Documentation Updates - Procedure validation
  • Staff Training - Recovery team preparation
  • Communication Plans - Stakeholder notification

Pro Tip: Test disaster recovery procedures regularly to ensure they work effectively when needed during actual incidents.

Comprehensive disaster recovery planning ensures DNS service continuity during critical incidents.

Edit this page