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Enabling DraaS on OpenStack

Enabling DraaS on OpenStack. Speakers: Haribabu Kasturi, Amitabh Shukla. Why Disaster Recovery?. Why DraaS on OpenStack?. Co-located DR infrastructure enables highest level of RTO & RPO Less number of failures and low latency to data backup. New customers from SME customers .

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Enabling DraaS on OpenStack

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  1. Enabling DraaS on OpenStack Speakers: Haribabu Kasturi, Amitabh Shukla

  2. Why Disaster Recovery?

  3. Why DraaS on OpenStack? • Co-located DR infrastructure enables highest level of RTO & RPO • Less number of failures and low latency to data backup • New customers from SME customers • A DR option on homogenous environments enables workloads to use services from platforms effectively • Simpler Implementation of failback • Various businesses require affordable & simple solution to a near real time CDP solution • Different RTO and options allow same stack to serve various customers with different solutions

  4. Agenda

  5. Sources for DR Virtual Machines Private Cloud Physical Machines DRaas

  6. Basic Steps involved in DR

  7. A little re-introduction of terms • RPO : Recovery Point Objective is the age of files that must be recovered from backup storage for normal operations to resume after failure • Ex: if the RPO is one hour, backups must be made at least once per hour. • RTO : Recovery Time Objective is the duration of time within which a Machine must be restored after a disaster (or disruption) • Ex: if RTO is 10 minutes then the service must be recovered with in 10 minutes of reporting failure. • Delta Backups: Delta backups are the differences between the last Recovery Point and now. These can be disk, configuration or meta data information

  8. DraaS on OpenStack alternative #1 DR-VM Virtual Machines 6 Dash Board 4 5 DraaS Agent 1 DraaS Service 2 Cinder RPO > 30 Min RTO < 10 Min 3 Cinder- Volumes

  9. Steps involved • DraaS Agent Requests Back UP • DraaS Service assigns the Data VM that stores the delta snapshot • Data VM is writes deltas to the cinder volume such that exact replica of source disk is maintained • User/ Backup program initiates backup • DraaS Service requests Compute cluster to boot from cinder • DR VM comes up and accessible

  10. DraaS on OpenStack alternative #2 DR-VM Virtual Machines Dash Board 6 5 3 4 Swift Merged Image DraaS Agent 1 DraaS Service 2 Glance RPO > 12 hrs RTO < 1 Hr Compute

  11. Steps Involved • DraaS Agent pushes Snapshots periodically to DraaS service • DraaS Service pushes objects to swift • User/ Backup program initiates backup • DraaS service requests compute to boot machine • DraaS Service merges snapshots and uploads to glance • DR VM comes up and accessible

  12. Challenges • Huge Data movement between Crystals • RTO and RPO requirements • “No change” syndrome for already existing Cloud • Application Quiescing involves in Synchronous backing of various VM’s on timeline • Small implementation issues

  13. Next Steps • Define incubated project for DRaaS for OpenStack • Enhance Disk Replication Service in OpenStack for DRaaS support • Define and develop Agents for various types of end points as OpenStack Projects

  14. Thank you all on behalf of Persistent. Feedback / Questions: haribabu_kasturi@persistent.co.in vijesh_rangaswami@persistent.co.in shriram_natarajan@persistent.co.in

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