HP Cluster Software Change of HP 3PAR storage system IP or password file, Host persona settings

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Resource disk failure when HP 3PAR Cluster Extension is online

In a cluster resource group, if the Cluster Extension resource is online but dependent disk resource is failing:

•Ensure that the fibre channel connectivity between the servers and the storage systems is up and running.

•Verify that the disk resource is dependent to the Cluster Extension resource.

•Ensure that the Remote Copy volume group managed by the Cluster Extension resource contains the virtual volume which is correctly mapped to the configured disk resource.

•On a cluster node where the Cluster Extension resource is online, ensure that the presented virtual volume is having read/write access on the HP 3PAR storage system.

•Using HP 3PAR Management GUI, verify that the virtual volume is having read/write access on HP 3PAR storage system where Cluster Extension resource is online.

•Rescan disks using Disk Management.

Cluster Extension and HP 3PAR Command Line (CLI) Install/Upgrade

While installing or upgrading HP 3PAR Command Line Interface (CLI), the environment variable Path will be updated with the CLI install directory. Occasionally, this change does not take effect and you may have to re-login to Windows. HP recommends that you test the CLI commands after you install or upgrade HP 3PAR CLI and try to re-login, if the commands fail due to the binary not found error.

Change of HP 3PAR storage system IP or password file

If there is change in the configured HP 3PAR storage system's IP address in the Cluster Extension configuration or if the configured password file is missing or corrupt, Cluster Extension will fail to communicate with the storage system and cannot perform any Cluster Extension failover operations. You can use the Connection Test option of HP 3PAR Cluster Extension configuration tool to verify connectivity of configured storage systems. To change HP 3PAR storage systems settings, use the Modify option in the HP 3PAR Cluster Extension configuration tool and save the configuration file on all cluster nodes.

Host persona settings

Host personas are a set of behaviors that permit hosts connected to FC ports on the HP 3PAR storage system to deviate from the default host behavior. By assigning a persona to a host, multiple host types that require distinct customized responses can share a HP 3PAR storage system port. For example, hosts running Windows operating systems can all connect to the same HP 3PAR storage system port.

You can set the host persona number when the host is created or modify it later. To display, create, modify, and remove host personas, use the HP 3PAR CLI commands or the HP 3PAR Management Console. For instructions on displaying, creating, modifying, and removing host personas, see the HP 3PAR InForm CLI Administrator’s Manual or the HP 3PAR InForm Management Console Online Help.

NOTE: Host persona setting varies based on the Windows operating system installed on the cluster nodes. For more information, see the HP 3PAR Implementation Guide.

no_fail_wrt_on_err settings

The no_fail_wrt_on_err policy applies only to synchronous Remote Copy.

The no_fail_wrt_on_err group policy (default policy) allows writes to a primary Remote Copy volume group even though the link between the systems in the Remote Copy pair is broken.

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Contents HP 3PAR Cluster Extension Software Administrator Guide Acknowledgments Contents CLI commands and utilities Troubleshooting Support and other resourcesGlossary Index Integration into cluster software Graphical user interface CLI for easy integrationDisaster tolerance through geographical dispersion Metropolitan distance support Automated redirection of mirrored disksFully Automatic Failover and Failback No server rebootSynchronous mode support Storage system configurationsTo-1 configuration To-1 configurationTo-1 and 1-to-N configurations Processes and componentsHP 3PAR Remote Copy Remote Copy pairs Remote Copy volume groupsForce Flag User configuration fileCluster setup considerations Planning for HP 3PAR Cluster ExtensionNode Majority with File Share Witness 14 HP 3PAR Cluster Extension features SAN fabric considerations Configuration tool clx3PARconfig.exeHP 3PAR InForm Management Console or HP 3PAR InForm CLI IP network considerationsConfiguring HP 3PAR Cluster Extension Starting the HP 3PAR Configuration ToolIntegrating 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 Adding a HP 3PAR Cluster Extension resource Importing and exporting configuration informationExample Adding HP 3PAR Cluster Extension resource using cluster.exeChanging a HP 3PAR Cluster Extension resource name Configuring HP 3PAR Cluster Extension resourcesTIP 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 Changing Remote Copy volume group settings Selecting a volume groupConfiguring takeover actions Setting HP 3PAR Cluster Extension properties using a UCF Cluster resource clxfileshare /privpropSet-ClusterParameter -Name propertyname -Value valuetoset Adding dependencies on a HP 3PAR Cluster Extension resource Adding dependencies using Failover Cluster ManagementAdding dependencies using the CLI Adding dependencies using the PowerShellCluster resource Disk32b00b /adddependencyclxfileshare Configuration of HP 3PAR CLX for CSV disk on Windows Server Disaster-tolerant configuration example using a file shareFour nodes host1DCA, host2DCA, host3DCB and host4DCB Service or application example \cluster resource Clxfileshare /ProP RestartAction=0 Managing HP 3PAR Cluster Extension resourcesBringing a resource online Disk3PARLUN25Using Hyper-V Live Migration with HP 3PAR Cluster Extension Taking a resource offlineDeleting a resource Bouncing service or application Creating array password fileTiming considerations for Windows Clustering Msfc Administration System resources LogsHyper-V Live Migration log entries Configuring HP 3PAR Cluster Extension Page Configuring HP 3PAR Cluster Extension ProgramFiles%\Hewlett-Packard\Cluster Extension 3PAR\conf User configuration fileWindows Clustering File structureSpecifying object values Common objectsApplicationDir Application objectsLogDir LogLevelApplicationStartup Optional Default %HPCLX3PARPATH% valuesDCBHosts Required ClusterNotifyCheckTimeClusterNotifyWaitTime DCAHosts RequiredDCB InServStorageSerNum Required RCVolumeGroupA RequiredRCVolumeGroupB Required DCA InServStorageSerNum RequiredStatusRefreshInterval Sample configuration fileResyncWaitTimeout Optional HP3PARCLICommandTimeoutPage Clx3PARrun CLI commandsForceflag option Configuring the CLIConfiguring the HP 3PAR storage system Creating the HP 3PAR Remote Copy environmentInstalling HP 3PAR InForm Command Line Interface CLI Creating and configuring the user configuration fileTiming considerations Restrictions for customized implementations CSVDiskName String Synopsis\PSAdd-CSVDependencyOnCLX3PAR Outputs\PSAdd-CSVDependencyOnCLX3PAR -CSVDiskName Cluster Disk Related Links \PSAdd-VMDependencyOnCLX3PAR \PSAdd-VMDependencyOnCLX3PAR -CSVDiskName Cluster Disk Total virtual machines in the cluster residing on CSVRelated Links Name \PSGet-VMOnClusterSharedVolumeListForCLX3PAR Pre-execution and post-execution programs Post-execution return codes Pre-execution return codesProgramFiles%\Hewlett-Packard\Cluster Extension 3PAR\log\ LogsLog facility CLX cmdlet logs %HPCLX3PARPATH%\log\CLXCmdlet.logHP 3PAR Cluster Extension logs Error return codes HP 3PAR storage system log or sysmgr logRun showsys Start errors Log filesMsfc log file %windir\cluster\reports\cluster.log Failover error handling Nslookup storage system network name Cannot connect to HP 3PAR storage systemEcho rescan diskpart Ping storage system network name or IP addressChange of HP 3PAR storage system IP or password file Host persona settingsNofailwrtonerr settings Remote Copy and 3PAR Virtual Domains Promote issueCluster Extension Autopass troubleshooting HP 3PAR Target arrays not configured with Remote Copy LinksHP 3PAR Target arrays not configured with Remote Copy Links Whitepapers Contacting HPNew and changed information in this edition Related informationDocument conventions Typographic conventionsGlossary Index SymbolsIndex Product manuals
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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.
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