In the current example, the state of the local Remote Copy (RC) group is “primary” (virtual volumes having read/write access) and the state of the remote RC group is “secondary” (virtual volumes having read-only access). The RC link status is UP and the replication status is started.

Line 30: The status of the Cluster Extension takeover action.

Line 31: The encoded Cluster Extension execution path.

Line 32: Online status of Cluster Extension resources.

Line 33: Creating <CLX resource name>.online file to check resource health.

Line 34: End of the Cluster Extension execution process.

HP 3PAR storage system log or sysmgr log

A task, identified by task IDs is generated for each operation in the 3PAR storage system. Task manager commands provides information regarding the tasks in the system.

For more information, see Managing Tasks section in HP 3PAR CLI Administrator’s Manual.

NOTE: Match the 3PAR storage system time with the cluster node time so that tasks can be easily mapped to Cluster Extension operations.

For detailed log messages from HP 3PAR storage system, do the following:

1.Login with the 3parsvc user using HP 3PAR CLI.

2.Run showsys.

This will indicate the master node on that system.

3.On the CLI shell, enter copyfile <nodeid>:/var/log/tpd/sysmgr /tmp/xxxsysmgr. If master node ID is 1, then copyfile 1:/var/log/tpd/sysmgr /tmp/sysmgr.

4.In the above example, the file sysmgr will be copied to the <SystemDrive:>\tmp directory.

Error return codes

HP 3PAR Cluster Extension provides the following error return codes for failover operations:

Error return codes

Description

local error

Prohibits an application service startup on the local system.

 

This can be caused by the inability of HP 3PAR Cluster

 

Extension to enable disk access, or the misconfiguration

 

of the storage system environment.

data center error

Prohibits an application service startup on any system in

 

the local data center. This error is returned if the disk state

 

indicates that it makes no sense to allow any other system

 

connected to the same storage system to access the disks.

 

Windows clustering does not allow cluster-wide or

 

data-center-wide disabling of resources. This is local error

 

behavior.

global error

Returned if the configuration or the disk state do not allow

 

an automatic application service startup process. Manual

 

intervention is required in such cases. Windows clustering

 

does not allow cluster-wide or data-center-wide disabling

 

of resources. This is local error behavior.

Replication I/O not started error

Replication I/O between the primary and secondary

 

Remote Copy volume group is not started. Use HP 3PAR

 

Management GUI or CLI to check if the replication status

 

is started or not. You can manually start the Remote

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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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