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Disaster Recovery – Beyond Backup

Disaster Recovery – Beyond Backup. Jason Phippen – Director Product and Solutions Marketing, EMEA. Agenda. Disaster Recovery Concepts Backup – Last Line of Defence Enhancing Backup with Replication Remote Site Replication and Mirroring Clustering for Disaster Recovery Questions. Wks.

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Disaster Recovery – Beyond Backup

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  1. Disaster Recovery – Beyond Backup Jason Phippen – Director Product and Solutions Marketing, EMEA

  2. Agenda • Disaster Recovery Concepts • Backup – Last Line of Defence • Enhancing Backup with Replication • Remote Site Replication and Mirroring • Clustering for Disaster Recovery • Questions

  3. Wks Days Hrs Mins Secs Secs Mins Hrs Days Wks Recovery Point Recovery Time Disaster Recovery Concepts • Recovery Point Objective (RPO) – Point in time to which applications data must be recovered to resume business transactions • Recovery Time Objective (RTO) – Maximum elapsed time allowed before lack of business function severely impacts an organization

  4. Wks Days Hrs Mins Secs Secs Mins Hrs Days Wks Recovery Point Recovery Time Recovery Point Objective (RPO) • How much data loss can you endure? Replication Tape Backup w/ Offsite Vaulting

  5. Wks Days Hrs Mins Secs Secs Mins Hrs Days Wks Recovery Point Recovery Time Recovery Time Objective (RTO) • How much downtime can you endure? Geographic Clustering Recovery from Tape

  6. Choosing a Recovery Site • “Far Enough” away • How far away from the main site? • What resources should it have? • Site Strategies (Hot, Warm, Cold) • Considerations • Fault zones • Flood plains • Power grids • Climate zones • Locality relative to other sites (e.g., airport) • Remote customers and employees

  7. Backup – Your last line of Defense • Redundant systems replicate user errors, viruses and data corruption • System or component redundancy (RAID, mirroring) cannot replace backup • Backup tapes may represent the last valid copy of data • Backups are your last line of defense against total data loss

  8. Enhancing Backup with Replication

  9. Replication-enhanced Backup • Replicating the Backup Catalog server • Shave hours off a tape restore strategy • No need to re-catalog tapes • No need to rebuild the backup/restore server • Tape restores can begin immediately Site A Site B Replicate Backup Catalogs Backup Master/Media Server Backup Tape Copies Sent to Offsite Backup Clients

  10. Remote Site Replication and Mirroring

  11. Weeks Days Minutes Seconds Hours Recovery Point Replication and Mirroring Asynchronous Synchronous • Key Requirements… • Must be “far enough” away • No windows of data corruption at secondary

  12. 3 4 1 2 Synchronous Replication Primary Site Secondary Site • Strengths • Maximum data currency (RPO) • Data available immediately at secondary (RTO) • Weaknesses • Potential to impact application performance • Data writes lag by network latency • Write commit latency across nodes

  13. 4 2 1 3 Asynchronous Replication Primary Site Secondary Site • Strengths • Maximum performance • May have less application impact • Data available immediately at secondary (RTO) • Weaknesses • Secondary may lag primary (RPO) • Potential for data corruption (not a weakness for VERITAS)

  14. Secondary Site SAN Fabric Logical Volume ManagementRemote Mirroring Primary Site • Lower hardware costs • Groups physical disks into logical volumes • Hardware Independence, • Greater IT productivity • Simplified administration of heterogeneous environments • Proactive management of applications • Increased application ROI Application Volume Manager • Can mirror over SAN distances

  15. Clustering for Disaster Recovery

  16. WAN Clustering for Disaster Recovery Campus / MAN Disaster Recovery WAN Disaster Recovery MAN OR Clustering, Remote Mirroring Clustering , Replication Clustering, Replication, Global Clustering

  17. Campus / MAN Disaster Recovery St-r-e-t-c-h Cluster Over A SAN * Distance may vary depending upon infrastructure

  18. Global Clustering • Geographically dispersed sites linked by public carrier wide area network • Each site aware of the configuration and state of all of the sites • Direct site level migration in event of catastrophe • Global Availability Management • Single point of monitoring and administration

  19. Site Migration Failover Application Application Application Replication Clustering Clustering Clustering Global Clustering Global Clustering Global Clustering Wide Area Availability

  20. VERITAS: Uniquely Qualified (HA and DR) Local Multi-site Availability Requirements VERITAS Cluster Server VERITAS Global Cluster Manager Volume Manager/ Foundation Suite VERITAS Volume Replicator NetBackup/ Backup Exec - NetBackup Vault - BMR / IDR

  21. Questions

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