CREATING A DISASTER RECOVERY PLAN

1
CREATING A DISASTER RECOVERY PLAN

• Chapter 13

2
BACKUP REQUIREMENTS CRITERIA

• Maximum acceptable downtime
• Maximum acceptable data loss
• Data retention requirements

3
BACKUP MEDIA

• Hard disks
• Tapes
• Writeable CDs and DVDs
• Optical media

4
BACKUP METHODS

• Full
• Incremental
• Differential
• Copy
• Daily

5
DEDICATED BACKUP NETWORK
6
BACKUP STORAGE AREA NETWORK (SAN)
7
VOLUME SHADOW COPY

• Enables snapshot backups
• Backs up all files at a specific point in time
• Ensures backups are consistent even when data is
  constantly changing

8
BACKING UP APPLICATIONS

• Backed up with System State
• Active Directory
• Certificate Services
• DNS
• IIS
• Require special backups
• Microsoft SQL Server 2000
• Microsoft Exchange Server 2003

9
BACKUP FACILITIES HOT SITE

• Has active network and phone infrastructures
• Requires duplicate, constantly updated servers
• Advantages
• Quick recovery time (hours)
• Easy to test
• Disadvantages
• Extremely high cost
• Cannot be shared between different companies

10
BACKUP FACILITIES WARM SITE

• Prewired for network and phone infrastructure
• Requires moving or buying new computers
• Advantages
• Lower cost than hot site
• Can be shared between multiple companies
• Disadvantages
• Longer recovery time (days)
• Moderately high cost

11
BACKUP FACILITIES COLD SITE

• Empty facility with minimal infrastructure
• Requires building infrastructure before being
  used
• Advantages
• Very low cost
• Can be easily shared between companies
• Disadvantage
• Long recovery time (weeks)

12
BACKUP FACILITIES MOBILE SITE

• Truck with network and telephone capabilities
• Travel to desired location
• Advantages
• Can service multiple locations
• Can be shared between companies
• Disadvantage
• Limited space

13
BACKUP FACILITIES RECIPROCAL AGREEMENT

• Share space with another facility in a disaster
• Advantages
• Minimal cost
• Disadvantages
• Crowded facilities during a disaster
• Partner might refuse access during a disaster

14
DESIGNING A DISASTER RECOVERY PROCESS

• Perform risk analysis and business impact
  analysis
• Develop the plan
• Implement policies and procedures
• Test the process
• Maintain and update the process

15
DISASTER RECOVERY GUIDELINES

• Plan for business continuance
• Maintain hardware and software records
• Create separate backup policies for different
  roles
• Write down procedures
• Practice recovery
• Audit backups
• Backup software and licenses
• Check your insurance policy

16
THE DISASTER RESPONSE PROCESS

• Protect human life and safety
• Contain the damage
• Assess the damage
• Determine the cause of the damage
• Repair the damage
• Review response and update policies

17
SERVER RECOVERY STRATEGIES

• Restore the server
• Rebuild the server
• Use a standby server

18
SUMMARY

• Determine backup requirements based on maximum
  data loss, downtime, and data retention
  requirements
• Use a dedicated network or SAN for high-bandwidth
  backups
• Choose a backup facility that meets disaster
  recovery requirements while minimizing cost
• Create a disaster recovery plan, and practice
  that plan