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High Availability with Windows Server Clustering and Geo-Clustering
The presentation discusses high availability through Windows Failover Clustering and Geo-Clustering, covering its importance in today's IT landscape, including the costs associated with downtime. It highlights new features in Windows Server 2012/R2 clustering, processes for creating clusters, and best practices for multi-site failover clusters. Additional resources and FAQs provide further guidance on implementing failover clustering.
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High Availability with Windows Server Clustering and Geo-Clustering
- 1. Event Title High AvailabilitywithHigh Availability with Windows FailoverWindows Failover Clustering and Geo-Clustering and Geo- ClusteringClustering Michael Otey Senior Technical Director Windows IT Pro SQL Server Pro 1
- 2. Event Title What thispresentation coversWhat this presentation covers Today’s IT requirementsToday’s IT requirements The costs of downtimeThe costs of downtime Understanding Windows FailoverUnderstanding Windows Failover ClusteringClustering New features in Ws2012 / R2 clusteringNew features in Ws2012 / R2 clustering Geo-clustersGeo-clusters Architecting availabilityArchitecting availability Additional referencesAdditional references 2
- 3. Event Title Today’s ITRequirementsToday’s IT Requirements AgilityAgility Meeting quickly changing business conditionsMeeting quickly changing business conditions Reducing complexityReducing complexity Increasing automationIncreasing automation Consumerization of ITConsumerization of IT Reducing costsReducing costs CapEXCapEX OpExOpEx Data control and securityData control and security
- 4. Event Title The Costsof DowntimeThe Costs of Downtime GartnerGartner $5600 p/m$5600 p/m $300K p/h$300K p/h Amazon 30 minute outage in 2013Amazon 30 minute outage in 2013 $66,240 p/m$66,240 p/m Approximately $3MApproximately $3M Its not just dollarsIts not just dollars Customer / end user confidenceCustomer / end user confidence ReputationReputation 4
- 5. Event Title Windows FailoverCluster OverviewWindows Failover Cluster Overview Provides protection from unplannedProvides protection from unplanned downtimedowntime Automated failoverAutomated failover Server-levelServer-level Maximum of 64 nodesMaximum of 64 nodes Added as a Windows Server FeatureAdded as a Windows Server Feature 5
- 6. Event Title New Featuresin Windows FailoverNew Features in Windows Failover Clustering for WS2012 & R2Clustering for WS2012 & R2 Windows Server 2012Windows Server 2012 64 node cluster64 node cluster Up from 16Up from 16 4000 VMs per cluster4000 VMs per cluster 1024 VMs per node1024 VMs per node Tunable heartbeatTunable heartbeat Windows Server 2012 R2Windows Server 2012 R2 Shared virtual hard diskShared virtual hard disk Virtual machine drain onVirtual machine drain on shutdownshutdown Virtual machine networkVirtual machine network health detectionhealth detection Active Directory-detachedActive Directory-detached clustercluster 6
- 7. Event Title Windows FailoverClusterWindows Failover Cluster 7
- 8. Event Title Cluster QuorumTypesCluster Quorum Types Node MajorityNode Majority For clusters with an odd number of nodesFor clusters with an odd number of nodes Can sustain failures of half the nodes minus oneCan sustain failures of half the nodes minus one Node and Disk MajorityNode and Disk Majority For clusters with an even number of nodesFor clusters with an even number of nodes Can sustain failures of half the nodes if the diskCan sustain failures of half the nodes if the disk witness remains onlinewitness remains online Node and File Share MajorityNode and File Share Majority For clusters with special configurationsFor clusters with special configurations Like Node and Disk Majority but usesLike Node and Disk Majority but uses a file share witnessa file share witness 8
- 9. Event Title Adding theFailover ClusteringAdding the Failover Clustering FeatureFeature Server ManagerServer Manager Add Roles andAdd Roles and FeaturesFeatures FeaturesFeatures Failover ClusteringFailover Clustering 9
- 10. Event Title Creating theClusterCreating the Cluster 10 Failover Cluster ManagerFailover Cluster Manager Validate theValidate the configurationconfiguration Select NodesSelect Nodes Tests:Tests: SystemSystem NetworkingNetworking StorageStorage Create ClusterCreate Cluster Select NodesSelect Nodes Cluster nameCluster name Virtual IPVirtual IP Select QuorumSelect Quorum StorageStorage
- 11. Event Title Multi-site FailoverClustersMulti-site Failover Clusters Disaster recoveryDisaster recovery Protects against loss of entire locationProtects against loss of entire location Storage synced with SAN-to-SANStorage synced with SAN-to-SAN replicationreplication 11
- 12. Event Title Multi-site FailoverClustersMulti-site Failover Clusters Best practicesBest practices Even number of nodeEven number of node Node and File Share Majority optionNode and File Share Majority option Including a file share witnessIncluding a file share witness Consider DNS replicationConsider DNS replication TTLTTL Tuning heartbeat to adjust for latencyTuning heartbeat to adjust for latency Asynchronous storage replicationAsynchronous storage replication Using the same HBAs and NICs on each siteUsing the same HBAs and NICs on each site 12
- 13. Event Title Architecting AvailabilityArchitectingAvailability TechnologyTechnology Failover ClusteringFailover Clustering PeoplePeople TrainingTraining ProcessesProcesses StandardsStandards DocumentationDocumentation RunbooksRunbooks 13
- 14. Event Title FAQsFAQs Q: DoI need specialized hardware for the failoverQ: Do I need specialized hardware for the failover cluster nodes?cluster nodes? A: No. You can use stand servers. Microsoft will supportA: No. You can use stand servers. Microsoft will support the cluster if it passes the validation tests.the cluster if it passes the validation tests. Q: Do all the cluster nodes have to be configured theQ: Do all the cluster nodes have to be configured the same?same? A: NoA: No Q: Do I need a SAN if I want to buildQ: Do I need a SAN if I want to build a Windows Failover Cluster?a Windows Failover Cluster? A: No. But you do need shared storageA: No. But you do need shared storage Q: can you implement a WindowsQ: can you implement a Windows Failover Cluster on with virtual machines?Failover Cluster on with virtual machines? A: Yes. You can implement a WindowsA: Yes. You can implement a Windows Failover Cluster at either the hostFailover Cluster at either the host or guest level.or guest level. 14
- 15. Event Title Additional ReferencesAdditionalReferences Failover Clustering OverviewFailover Clustering Overview http://technet.microsoft.com/en-us/library/hh831579.aspxhttp://technet.microsoft.com/en-us/library/hh831579.aspx Requirements and Recommendations for a Multi-SiteRequirements and Recommendations for a Multi-Site Failover ClusterFailover Cluster http://technet.microsoft.com/en-http://technet.microsoft.com/en- us/library/dd197575(v=ws.10).aspxus/library/dd197575(v=ws.10).aspx Windows Server 2012: Building a Two-Node Failover ClusterWindows Server 2012: Building a Two-Node Failover Cluster http://windowsitpro.com/windows-server-2012/windows-server-http://windowsitpro.com/windows-server-2012/windows-server- 2012-building-two-node-failover-cluster2012-building-two-node-failover-cluster Creating a Windows Server 2012 R2Creating a Windows Server 2012 R2 Failover Cluster using Starwind SAN V8Failover Cluster using Starwind SAN V8 http://www.starwindsoftware.com/http://www.starwindsoftware.com/ white-papers/white-papers/ Windows Server 2012 Geo-ClusteringWindows Server 2012 Geo-Clustering www.starwindsoftware.comwww.starwindsoftware.com 15
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