HP Cluster Software manual Using Hyper-V Live Migration with HP 3PAR Cluster Extension

Page 40

To bring resources online:

•Use Failover Cluster GUI or Cluster CLI or Microsoft PowerShell Cmdlets.

•For Server Core or Hyper-V Server, use the CLI or the MMC or Microsoft PowerShell Cmdlets. For more information on using this command, see your Microsoft documentation.

Taking a resource offline

Resources are usually taken offline automatically when the service or application is taken offline. Taking a resource offline causes resources that depend on that resource to go offline.

When taking resources offline:

•Use Failover Cluster GUI or Cluster CLI or Microsoft PowerShell Cmdlets.

•For Server Core or Hyper-V Server, use the CLI or the MMC or Microsoft PowerShell Cmdlets. For more information on using this command, see your Microsoft documentation.

Deleting a resource

Deleting a running resource causes the resource and its dependents to go offline.

CAUTION: Deleting a running resource does not remove the resource_name.online file.

When deleting resources:

•Use Failover Cluster GUI or Cluster CLI or Microsoft PowerShell Cmdlets.

•For Server Core or Hyper-V Server, use the CLI or the MMC or Microsoft PowerShell Cmdlets.

•For more information on deleting resources, see your Microsoft documentation.

Using Hyper-V Live Migration with HP 3PAR Cluster Extension

Live migration is a managed failover of VM resources. Live migration should be performed when all of the solution constituents are in a healthy state, all the servers and systems are running, and all the links are up. Ensure that the underlying infrastructure is in a healthy state before performing live migration.

HP 3PAR Cluster Extension has the capability of discovering unfavorable storage-level conditions for performing live migration. In response to these conditions, HP 3PAR Cluster Extension will stop or cancel the live migration process and inform the user. This is accomplished with no VM downtime. For example, if live migration is initiated while VM data residing on the storage system is still merging and not in sync, HP 3PAR Cluster Extension will proactively cancel the live migration and inform the user to wait until the disks are fully in sync. Without this feature, live migration might fail or the VM might come online in the remote data center with inconsistent data.

The HP 3PAR Cluster Extension StatusRefreshInterval property, which you can configure in a UCF for each application, specifies the time interval between consecutive array status gathering operations before the live migration to the target cluster node occurs. By adjusting this property, you can increase the probability of getting the correct HP 3PAR storage system status to ensure a successful live migration. The default StatusRefreshInterval value is 300 seconds. For more information about configuring this property, see “Setting HP 3PAR Cluster Extension properties using a UCF” (page 34).

TIP: For more information about using Hyper-V Live Migration with HP 3PAR Cluster Extension, see the white paper Live Migration across data centers and disaster tolerant virtualization architecture with HP StorageWorks Cluster Extension and Microsoft Hyper-Von the white papers website: www.hp.com/storage/whitepapers.

40 Configuring HP 3PAR Cluster Extension

Page 39 Page 41
Image 40
Page 39 Page 41
Contents HP 3PAR Cluster Extension Software Administrator Guide Acknowledgments Contents CLI commands and utilities Support and other resources TroubleshootingGlossary Index CLI for easy integration Integration into cluster software Graphical user interfaceDisaster tolerance through geographical dispersion Automated redirection of mirrored disks Metropolitan distance supportNo server reboot Synchronous mode supportStorage system configurations Fully Automatic Failover and FailbackTo-1 configuration To-1 configurationProcesses and components To-1 and 1-to-N configurationsHP 3PAR Remote Copy Remote Copy volume groups Remote Copy pairsUser configuration file Cluster setup considerationsPlanning for HP 3PAR Cluster Extension Force FlagNode Majority with File Share Witness 14 HP 3PAR Cluster Extension features Configuration tool clx3PARconfig.exe HP 3PAR InForm Management Console or HP 3PAR InForm CLIIP network considerations SAN fabric considerationsStarting the HP 3PAR Configuration Tool Configuring HP 3PAR Cluster ExtensionIntegrating HP 3PAR Cluster Extension with Msfc Defining the HP 3PAR configuration information using the GUI Configuring HP 3PAR Cluster Extension SystemUser.pwd Defining the HP 3PAR configuration information using the CLI Importing and exporting configuration information Adding a HP 3PAR Cluster Extension resourceAdding HP 3PAR Cluster Extension resource using cluster.exe ExampleConfiguring HP 3PAR Cluster Extension resources Changing a HP 3PAR Cluster Extension resource nameTIP Setting resource properties and values in the GUI Service or application properties and values Using Failover Cluster Management to set resource properties Make the necessary parameter changes, and then click OK Page Configuring cluster node data center assignments Configuring HP 3PAR storage system Selecting a volume group Changing Remote Copy volume group settingsConfiguring takeover actions Cluster resource clxfileshare /privprop Setting HP 3PAR Cluster Extension properties using a UCFSet-ClusterParameter -Name propertyname -Value valuetoset Adding dependencies using Failover Cluster Management Adding dependencies on a HP 3PAR Cluster Extension resourceAdding dependencies using the PowerShell Adding dependencies using the CLICluster resource Disk32b00b /adddependencyclxfileshare Disaster-tolerant configuration example using a file share Configuration of HP 3PAR CLX for CSV disk on Windows ServerFour nodes host1DCA, host2DCA, host3DCB and host4DCB Service or application example Managing HP 3PAR Cluster Extension resources Bringing a resource onlineDisk3PARLUN25 \cluster resource Clxfileshare /ProP RestartAction=0Taking a resource offline Using Hyper-V Live Migration with HP 3PAR Cluster ExtensionDeleting a resource Creating array password file Bouncing service or applicationTiming considerations for Windows Clustering Msfc Administration Logs System resourcesHyper-V Live Migration log entries Configuring HP 3PAR Cluster Extension Page Configuring HP 3PAR Cluster Extension User configuration file Windows ClusteringFile structure ProgramFiles%\Hewlett-Packard\Cluster Extension 3PAR\confCommon objects Specifying object valuesApplication objects LogDirLogLevel ApplicationDirDefault %HPCLX3PARPATH% values ApplicationStartup OptionalClusterNotifyCheckTime ClusterNotifyWaitTimeDCAHosts Required DCBHosts RequiredRCVolumeGroupA Required RCVolumeGroupB RequiredDCA InServStorageSerNum Required DCB InServStorageSerNum RequiredSample configuration file ResyncWaitTimeout OptionalHP3PARCLICommandTimeout StatusRefreshIntervalPage CLI commands Clx3PARrunConfiguring the CLI Configuring the HP 3PAR storage systemCreating the HP 3PAR Remote Copy environment Forceflag optionCreating and configuring the user configuration file Installing HP 3PAR InForm Command Line Interface CLITiming considerations Restrictions for customized implementations Synopsis CSVDiskName StringOutputs \PSAdd-CSVDependencyOnCLX3PAR\PSAdd-CSVDependencyOnCLX3PAR -CSVDiskName Cluster Disk Related Links \PSAdd-VMDependencyOnCLX3PAR Total virtual machines in the cluster residing on CSV \PSAdd-VMDependencyOnCLX3PAR -CSVDiskName Cluster DiskRelated Links Name \PSGet-VMOnClusterSharedVolumeListForCLX3PAR Pre-execution and post-execution programs Pre-execution return codes Post-execution return codesLogs Log facilityCLX cmdlet logs %HPCLX3PARPATH%\log\CLXCmdlet.log ProgramFiles%\Hewlett-Packard\Cluster Extension 3PAR\log\HP 3PAR Cluster Extension logs HP 3PAR storage system log or sysmgr log Error return codesRun showsys Log files Start errorsMsfc log file %windir\cluster\reports\cluster.log Failover error handling Cannot connect to HP 3PAR storage system Echo rescan diskpartPing storage system network name or IP address Nslookup storage system network nameHost persona settings Change of HP 3PAR storage system IP or password fileNofailwrtonerr settings Promote issue Cluster Extension Autopass troubleshootingHP 3PAR Target arrays not configured with Remote Copy Links Remote Copy and 3PAR Virtual DomainsHP 3PAR Target arrays not configured with Remote Copy Links Contacting HP New and changed information in this editionRelated information WhitepapersTypographic conventions Document conventionsGlossary Symbols IndexIndex Product manuals
Related manuals
Manual 29 pages 1.1 Kb

Cluster Software specifications

HP Cluster Software is a robust solution designed to enhance the reliability, availability, and scalability of computing environments in enterprise settings. This software is instrumental in managing clusters of servers, providing a unified framework that allows for efficient resource management, workload distribution, and high availability.

One of the main features of HP Cluster Software is its ability to deliver high availability through failover mechanisms. In the event of a hardware or software failure, the software automatically shifts workloads from the affected node to a standby node within the cluster, minimizing downtime. This feature is critical for organizations that require continuous access to their data and applications.

Scalability is another significant characteristic of HP Cluster Software. Organizations can easily add or remove nodes from the cluster without disrupting ongoing operations. This flexibility ensures that enterprises can adapt to changing workloads and resource demands efficiently, making it suitable for environments ranging from small businesses to large data centers.

Load balancing is a key technology employed by HP Cluster Software. It intelligently distributes workloads across the available nodes, optimizing resource utilization and ensuring that no single server is overwhelmed. By balancing the load, organizations can achieve better performance and enhance the response times of applications, which are essential for user satisfaction.

HP Cluster Software supports various clustering topologies, including active-active and active-passive configurations. This versatility allows organizations to choose the architecture that best fits their operational requirements. Additionally, the software integrates seamlessly with various HP and third-party hardware and software solutions, thus providing a holistic environment for managing IT resources.

Moreover, HP Cluster Software offers centralized management tools that simplify cluster administration. Administrators can monitor cluster performance, manage workloads, and configure settings all from a single interface. This ease of use reduces the complexity often associated with managing large clusters and empowers IT teams to respond rapidly to issues.

In summary, HP Cluster Software is an essential tool for organizations looking to enhance their IT infrastructure's availability, reliability, and performance. With its failover capabilities, scalability options, load balancing technology, and centralized management features, it stands out as a comprehensive solution for modern computing challenges.
Top Page Image Contents