8 Recovery and failback

A recovery operation is executed when an SRM recovery plan is configured with SRM protection groups that uses replicated HP 3PAR Virtual Volumes as a Datastore.

Failback is a process that sets the replication environment back to its original state at the protected site (local site), prior to a failover. Failback is managed as a normal server migration process.

The following are the SRM operations that execute recovery and failback.

Test

This option performs nondisruptive recovery operations.

SRM communicates with HP 3PAR SRA using the remote storage information obtained during the discovery process. SRA creates snapshots of the Remote Virtual Volumes, and presents them to the recovery ESX server. During this recovery process, the VMs continue to run at the production site (protected site). You can verify that the VMs are running at the recovery site.

Clean Up

Perform the Cleanup operation after you have verified that the VMs are running at the recovery site (using the Test operation). SRA does a cleanup (unpresent and delete) of the previously created snapshots.

Recovery

Perform a recovery operation by shutting down the VMs at the protected site (Site A), and recover those VMs at the recovery site (Site B).

•Planned migration—SRM shuts down the VMs at protected site and unmounts the Datastores. SRA changes the status of the source Datastores to read-only, and then creates the snapshots of the source device. SRA reverses the replication direction and swaps the read/write relation between the Datacenters. SRM then rescans the Datastores at the recovery site, and restarts the VMs.

NOTE: Later, the snapshots taken at the protected site (before failover) will be used for restore replication operation by SRA. Restore replication is restoring the VMs to the original state by discarding the recent changes made at the recovery site. You cannot perform this operation from the SRM GUI. However, you can run the following SRM commands, sequentially, to perform this operation:

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prepareRestoreReplication

restoreReplication

•Disaster recovery—If the protected Datacenter is unavailable due to any disasters or failures, then you must run the SRM recovery plan to start up the VMs at the recovery site. The SRA recovery process is similar to planned migration, except for the snapshot creation operations performed at the protected site.

For SLD configurations:

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HP System Replication Adapter Software QL227 for VMware manual Recovery and failback, Test, Clean Up
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System Replication Adapter Software QL227 for VMware specifications

HP System Replication Adapter Software QL227 for VMware is a sophisticated tool designed to enhance data protection and availability for virtualized environments. This software enables seamless replication of virtual machines (VMs) across different locations, ensuring business continuity even in the face of disasters or system failures.

One of the main features of QL227 is its ability to integrate tightly with VMware environments. It supports VMware vSphere, which is a leading virtualization platform, allowing users to leverage their existing infrastructure while benefiting from HP’s data replication technology. The adapter simplifies the process of setting up and managing replication tasks, which can be critical for organizations with stringent uptime requirements.

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QL227 also includes advanced monitoring and reporting capabilities. Administrators can easily track the status of replication tasks, with real-time notifications and insights that help ensure data integrity and availability. Additionally, the software offers various recovery options, allowing users to initiate failover or failback processes with minimal disruption to operations.

The adapter’s compatibility with HP’s Enterprise Virtual Array (EVA) storage systems enhances its functionality even further, providing a robust infrastructure for managing replicated data. It is designed to work in conjunction with HP’s other data protection solutions, creating a comprehensive strategy for safeguarding critical business information.

Moreover, HP System Replication Adapter Software QL227 features automated policy management, which simplifies the administration of data replication tasks. This allows organizations to set predefined rules for how, when, and where data should be replicated, reducing the risk of human error and ensuring consistency across environments.

In conclusion, the HP System Replication Adapter Software QL227 for VMware is an essential solution for businesses looking to improve their data replication processes. Its integration with VMware, efficient block-level replication, advanced monitoring capabilities, and compatibility with HP storage systems make it a powerful tool for enhancing data protection and ensuring business continuity. With its innovative features and user-friendly interface, QL227 stands out as a vital component for any organization aiming to secure their virtualized infrastructure.
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