High Availability and Disaster Recovery using Virtualisation [email_address] www.techarchsolutions.com
Definitions <ul><li>HA – ability to proactively avoid some types of disasters before they occur </li></ul><ul><li>DR – abi...
Traditional HA solutions - Clustering <ul><li>Purpose </li></ul><ul><ul><li>High Availability </li></ul></ul><ul><ul><li>S...
Traditional HA solutions - Clustering <ul><li>Benefits </li></ul><ul><ul><li>Reduced probability of disaster occurrence </...
Current DR solutions <ul><li>Media-based backup/restore </li></ul><ul><ul><li>Good: Familiar, cheap </li></ul></ul><ul><ul...
What is Virtualisation? <ul><li>Multiple virtual systems residing on a physical server. </li></ul><ul><li>Provides a layer...
Virtualisation as an Option <ul><li>Disadvantages </li></ul><ul><ul><li>Not recommended for servers that are heavily utili...
Clustering for Higher Availability in a Virtual Infrastructure <ul><li>Cluster Virtual Machines for High Availability </li...
Virtual Machine HA solutions <ul><li>VMs can be run from any server in a pool </li></ul><ul><li>VMs can be dynamically mov...
Virtual Machine HA solutions <ul><li>VMs from a failed server can be brought back on-line in remaining server pool quickly...
Clustering with Virtual Machines <ul><li>Cluster between physical and virtual machines </li></ul><ul><li>Cluster-in-a-box ...
Physical-to-Virtual Clustering <ul><li>Physical machine clustered with a Virtual Machine </li></ul><ul><li>Shared storage ...
Cluster in a Box <ul><li>One VM is primary and second is backup </li></ul><ul><li>Quorum on shared storage </li></ul>PNet ...
VM clustering between two servers <ul><li>VM on one host is primary, VM on second host is backup </li></ul><ul><li>Shared ...
Virtual DR solutions <ul><li>VMotion between DCs </li></ul><ul><li>SAN mirroring between DCs </li></ul><ul><li>Snapshot an...
Virtualisation Vendors <ul><li>Xen </li></ul><ul><li>Solaris Zoning </li></ul><ul><li>Microsoft Virtual Server 2005 </li><...
Migration Tools for Virtualisation <ul><li>Microsoft VSMT </li></ul><ul><li>Leostream P>V direct </li></ul><ul><li>VMware ...
PlateSpin PowerConvert
PlateSpin PowerConvert Solutions <ul><li>Consolidation </li></ul><ul><li>Recovery </li></ul><ul><li>Test lab automation </...
Future of Virtual Infrastructure <ul><li>Host server clustering – ability to automatically bring up VMs on secondary serve...
QUESTIONS <ul><li>??????????????????????????? </li></ul>
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High Availability and Disaster Recovery using Virtualisation

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High Availability and Disaster Recovery using Virtualisation

  1. 1. High Availability and Disaster Recovery using Virtualisation [email_address] www.techarchsolutions.com
  2. 2. Definitions <ul><li>HA – ability to proactively avoid some types of disasters before they occur </li></ul><ul><li>DR – ability to quickly recover data and restart business operations in the event of a disaster </li></ul>
  3. 3. Traditional HA solutions - Clustering <ul><li>Purpose </li></ul><ul><ul><li>High Availability </li></ul></ul><ul><ul><li>Scalability/Load Balancing </li></ul></ul><ul><ul><li>Manageability </li></ul></ul><ul><li>Types </li></ul><ul><ul><li>Active/Active </li></ul></ul><ul><ul><li>Active/Passive </li></ul></ul><ul><ul><li>Cold Failover </li></ul></ul><ul><ul><li>Hot Failover </li></ul></ul>
  4. 4. Traditional HA solutions - Clustering <ul><li>Benefits </li></ul><ul><ul><li>Reduced probability of disaster occurrence </li></ul></ul><ul><ul><li>Reduced planned downtime windows and costs </li></ul></ul><ul><ul><li>Improved operational efficiencies </li></ul></ul><ul><li>Disadvantages </li></ul><ul><ul><li>Expensive IT investment </li></ul></ul><ul><ul><li>Active / Passive clusters waste hardware </li></ul></ul><ul><ul><li>Complex implementation </li></ul></ul>
  5. 5. Current DR solutions <ul><li>Media-based backup/restore </li></ul><ul><ul><li>Good: Familiar, cheap </li></ul></ul><ul><ul><li>Bad: slow, high cost of downtime </li></ul></ul><ul><li>Cold Standby </li></ul><ul><ul><li>Good: server availability </li></ul></ul><ul><ul><li>Bad: wasted hardware </li></ul></ul><ul><li>Hot Standby </li></ul><ul><ul><li>Good: quick turnaround time, multitasking </li></ul></ul><ul><ul><li>Bad: expensive </li></ul></ul>
  6. 6. What is Virtualisation? <ul><li>Multiple virtual systems residing on a physical server. </li></ul><ul><li>Provides a layer of abstraction between the hardware and software that runs on it. </li></ul>
  7. 7. Virtualisation as an Option <ul><li>Disadvantages </li></ul><ul><ul><li>Not recommended for servers that are heavily utilised </li></ul></ul><ul><ul><li>Not recommended for applications/servers requiring specific hardware requirements </li></ul></ul><ul><ul><li>If designed badly, single point of failure </li></ul></ul><ul><li>Advantages </li></ul><ul><ul><li>Greater solution ROI </li></ul></ul><ul><ul><li>Savings on hardware and rack space </li></ul></ul><ul><ul><li>Ease of management </li></ul></ul><ul><ul><li>Efficiency in deployment of VMs </li></ul></ul><ul><ul><li>Zero-downtime hardware maintenance </li></ul></ul><ul><ul><li>Higher SLA and DR at a lower cost </li></ul></ul>
  8. 8. Clustering for Higher Availability in a Virtual Infrastructure <ul><li>Cluster Virtual Machines for High Availability </li></ul><ul><li>Cluster host servers for High Availability </li></ul><ul><li>Application Clustering </li></ul><ul><li>Virtual Infrastructure can be a replacement for clusters where clustering for H/W failure only </li></ul>
  9. 9. Virtual Machine HA solutions <ul><li>VMs can be run from any server in a pool </li></ul><ul><li>VMs can be dynamically moved between servers </li></ul>
  10. 10. Virtual Machine HA solutions <ul><li>VMs from a failed server can be brought back on-line in remaining server pool quickly (within/across DCs) </li></ul>
  11. 11. Clustering with Virtual Machines <ul><li>Cluster between physical and virtual machines </li></ul><ul><li>Cluster-in-a-box </li></ul><ul><li>VM Clustering between 2 Host Servers </li></ul>
  12. 12. Physical-to-Virtual Clustering <ul><li>Physical machine clustered with a Virtual Machine </li></ul><ul><li>Shared storage required </li></ul>PM VM PNet FNet HB
  13. 13. Cluster in a Box <ul><li>One VM is primary and second is backup </li></ul><ul><li>Quorum on shared storage </li></ul>PNet HB FNet VM1 VM2 ESX Server
  14. 14. VM clustering between two servers <ul><li>VM on one host is primary, VM on second host is backup </li></ul><ul><li>Shared storage required </li></ul>VM2 VM1 HB FNet ESX 2 ESX 1 PNet
  15. 15. Virtual DR solutions <ul><li>VMotion between DCs </li></ul><ul><li>SAN mirroring between DCs </li></ul><ul><li>Snapshot and copy between DCs </li></ul><ul><li>Snapshot to tape or file server </li></ul><ul><li>Physical to virtual DR </li></ul>
  16. 16. Virtualisation Vendors <ul><li>Xen </li></ul><ul><li>Solaris Zoning </li></ul><ul><li>Microsoft Virtual Server 2005 </li></ul><ul><li>VMware ESX </li></ul>
  17. 17. Migration Tools for Virtualisation <ul><li>Microsoft VSMT </li></ul><ul><li>Leostream P>V direct </li></ul><ul><li>VMware P2V Assistant </li></ul><ul><li>Platespin PowerConvert </li></ul>
  18. 18. PlateSpin PowerConvert
  19. 19. PlateSpin PowerConvert Solutions <ul><li>Consolidation </li></ul><ul><li>Recovery </li></ul><ul><li>Test lab automation </li></ul><ul><li>Business Service Provisioning </li></ul><ul><li>Hardware migrations </li></ul><ul><li>Data Centre Moves or Centralisation </li></ul>
  20. 20. Future of Virtual Infrastructure <ul><li>Host server clustering – ability to automatically bring up VMs on secondary server in the event of failure </li></ul><ul><li>Integration of the system failure detection card into the ESX layer </li></ul><ul><li>Self managing Data Centres </li></ul><ul><li>Application virtualisation (Softgrid Softricity) </li></ul>
  21. 21. QUESTIONS <ul><li>??????????????????????????? </li></ul>

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