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Next Gen Hybrid Cloud with Hitachi Software Defined Storage on AWS and Cross-platform Replication

By Jaydeep Malode posted 3 hours ago

  

Next Gen Hybrid Cloud with Hitachi Software Defined Storage on AWS and Cross-platform Replication

As enterprises accelerate cloud modernization, hybrid cloud has become the preferred approach for balancing scalability, agility, and operational control. However, running stateful applications across on-premises and cloud environments introduces challenges around storage consistency, disaster recovery, and workload portability. 

 

 

A new reference architecture from Hitachi Vantara addresses these challenges by combining: 

  1. Red Hat OpenShift and Amazon Web Services for containerized hybrid cloud operations 

  1. Hitachi VSP One Block for enterprise on-premises storage/ Hitachi VSP One SDS Block for AWS cloud 

  1. Universal Replicator for asynchronous replication 

  1. CI/CD & IaC layer (OpenShift + Terraform + GitOps/Jenkins/Argo CD)

The architecture enables seamless replication and mobility of stateful workloads such as PostgreSQL across environments while maintaining data consistency and high availability to address your business needs.

How the Architecture Works 

Applications running on OpenShift use Kubernetes Persistent Volume Claims (PVCs) backed by VSP One Block storage on-premises. Write operations are captured by Universal Replicator journals and asynchronously transferred to AWS, where data is reconstructed on VSP One SDS Block.  

 

Universal Replicator enables seamless asynchronous, journal-based data replication between on-premises VSP One Block Storage and AWS-based VSP One SDS Block Storage, integrated with OpenShift environments. 

This design provides: 

  • Near real-time disaster recovery  

  • Write-order consistency  

  • Low RPO and fast RTO  

  • Minimal performance impact on production workloads  

In a failover scenario, replicated volumes in AWS are activated and applications can quickly restart on ROSA (Red Hat OpenShift Service on AWS).  

Kubernetes-Native and Automation-Ready 

The solution integrates with Kubernetes CSI drivers for dynamic volume provisioning and consistent storage management across both environments.  

It also supports modern DevOps practices using: 

  • GitOps  

  • Jenkins  

  • ArgoCD  

  • Terraform-based Infrastructure as Code (IaC)  

This enables automated deployment of OpenShift clusters, storage provisioning, and replication workflows.  

PostgreSQL Disaster Recovery Validation 

The reference architecture validates disaster recovery using a PostgreSQL workload deployed on OpenShift with PVC-backed storage. 

After replication was established: 

  • Data written on-premises was successfully replicated to AWS  

  • The replication pair was split to simulate failover  

  • PostgreSQL was restarted on ROSA using the replicated volume  

  • The database recovered successfully without native PostgreSQL replication  

This demonstrates application-transparent recovery using storage-level replication. 

Key Benefits 

The architecture delivers several enterprise advantages: 

  • High availability and business continuity  

  • Seamless disaster recovery across on-premises and AWS  

  • Hybrid cloud flexibility for workload mobility  

  • Kubernetes-native storage integration  

  • Elastic scalability with software-defined storage  

  • Simplified operations through automation and centralized management  

Conclusion 

By integrating Hitachi VSP One Block, Hitachi VSP One SDS Block, and Universal Replicator with Red Hat OpenShift on Amazon Web Services, organizations can build a resilient, scalable, and modern hybrid cloud platform capable of supporting mission-critical stateful applications with simplified disaster recovery and operational efficiency. 

For more information follow - Next Gen Hybrid Cloud with Hitachi Software Defined Storage on AWS and Cross-platform Replication Reference Architecture Guide • Viewer • Hitachi Vantara Documentation Portal 


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