Many Australian enterprises rely on IBM Power Systems to run core business applications. These platforms are stable, high-performing and deeply embedded in operations across industries such as finance, manufacturing, logistics, and government. However, the challenge lies in the growing limitations of traditional on-premises infrastructure.
Rising costs, limited scalability, and increasing compliance requirements are prompting organisations to rethink their IT environments. For businesses using IBM i, AIX, or Linux on Power, the question is how to move to the cloud securely, without disrupting operations or rewriting existing applications.
This guide provides a clear approach for planning and executing a secure cloud migration strategy for IBM Power workloads.
Why Migrate IBM Power Systems to the Cloud?
1. Reduce Operating Costs
Maintaining on-premises infrastructure for IBM Power workloads is resource-intensive. It requires ongoing capital investment, hardware refresh cycles, and specialist support. Shifting to a private cloud or infrastructure as a service (IaaS) model reduces capital expenditure and shifts costs to a more predictable operating model.
2. Improve Scalability and Resource Flexibility
Legacy systems often struggle to keep pace with fluctuating workloads or business expansion. Cloud environments allow you to scale compute and storage as needed, avoiding over-provisioning and underutilisation.
3. Enable Disaster Recovery and Business Continuity
Integrated disaster recovery solutions are built into many modern cloud infrastructure offerings. For enterprises running mission-critical applications, this ensures minimal downtime and faster recovery from failures.
4. Strengthen Data Protection and Compliance
Australian businesses must meet strict compliance standards, particularly in regulated sectors. Cloud platforms purpose-built for IBM Power workloads can offer robust security, including ISO 27001 certification, data security frameworks, and support for Australian data sovereignty requirements.
5. Extend the Life of Existing Applications
Many IBM Power workloads are deeply integrated with business processes. Rather than replacing or rewriting these systems, migrating to the cloud allows enterprises to retain their existing applications while improving performance and reliability.
Learn more: Benefits of Moving IBM i Workloads to a Managed Private Cloud
Planning a Secure and Compliant Migration
Migrating IBM Power Systems to the cloud involves careful planning to maintain operational continuity and protect business-critical data. The process can be approached in four practical stages.
1. Assess Your Current Environment
Before any migration begins, a full understanding of your current IT environment is essential. This includes mapping your:
- Workloads: Identify which IBM i, AIX, or Linux workloads are suitable for migration. Evaluate their dependencies, integrations, and availability requirements.
- Infrastructure: Review existing on-premises infrastructure including storage, networking, and disaster recovery provisions.
- Compliance requirements: Determine any regulatory obligations, such as APRA CPS 234, ISO 27001, or internal governance policies.
- Security posture: Understand where data is stored, how it’s accessed, and where vulnerabilities may exist.
This assessment forms the foundation of a risk-informed cloud migration planning process.
2. Develop a Cloud Strategy
Not all environments or workloads benefit from the same deployment model. Choose a structure that aligns with your business priorities and operational needs:
- Private cloud: Offers control, performance and compliance for sensitive workloads that can’t leave a defined environment.
- Hybrid cloud: Enables integration between cloud-hosted and on-premises systems. Ideal for organisations that need to retain some infrastructure on site.
- Multicloud or platform as a service (PaaS): May suit workloads requiring elasticity or cloud-native capabilities, though less common for IBM Power Systems.
Consider if a software as a service (SaaS) model could apply to any non-core applications as part of the broader modernisation effort.
3. Select a Migration Partner
The success of your migration relies heavily on selecting a partner that understands both the complexity of IBM Power environments and the regulatory context of operating in Australia.
Look for providers who offer:
- A secure, locally hosted cloud infrastructure certified for IBM i and AIX workloads
- Australian data residency and sovereignty assurance
- Proven experience supporting migrated applications without replatforming
- Integrated disaster recovery capabilities with geo-redundancy
- A clear operating model with transparent roles, responsibilities, and service levels
4. Migrate in Stages
A phased approach reduces the risk of disruption and allows for thorough cloud migration testing at each step. A common approach involves:
- Replication of production environments to the target cloud platform
- Validation and testing of system behaviour, backups, and failover procedures
- Cutover planning during a low-impact window, with rollback measures in place
- Monitoring and tuning during the early post-migration period
Security controls should be validated at every stage, including identity and access management, encryption, and endpoint protections.
Learn more: Integrating On-Premises to Cloud Services: A Technical Guide
Security and Compliance Considerations
Data Security
A secure IBM Power cloud platform should provide:
- Enterprise-grade encryption for data in transit and at rest
- Role-based access controls to restrict privileged user activity
- System-level isolation between tenants in shared infrastructure
- Continuous monitoring and threat detection
- Multi-layered backup and recovery solutions, including disaster recovery across multiple data centres
These features are especially important when moving existing applications to the cloud without major refactoring.
Local Compliance Standards
Many businesses must meet local data residency and sovereignty requirements. To satisfy these, cloud infrastructure should:
- Be hosted in Australian data centres with controlled physical access
- Adhere to recognised frameworks such as ISO 27001, Essential Eight, or CIS Controls
- Provide audit trails and regular compliance reporting
These elements help support industry-specific obligations such as APRA, PCI DSS, and GDPR.
Hybrid Cloud Compatibility
Cyber security should remain consistent across both cloud and on-premises infrastructure in hybrid cloud scenarios. Tools for unified identity management, policy enforcement, and monitoring are essential to maintaining security across connected environments.
Learn more: IBM i Application Modernisation: Transforming Legacy Apps
Cloud Migration Readiness Checklist
Technical Assessment
- Existing licensing agreements and support contracts have been reviewed
- Workloads have been categorised and prioritised for migration
- Dependencies across applications and systems have been documented
- Security risks in the current environment are understood
Compliance and Risk
- A data classification policy is in place to guide storage and access decisions
- Compliance frameworks (e.g. ISO, Essential Eight) have been mapped to the target environment
- Data residency and sovereignty requirements have been defined
Strategy and Planning
- Disaster recovery and business continuity requirements are included in the scope
- A cloud migration strategy has been approved by IT and business leadership
- The right delivery model has been selected (private, hybrid, or public cloud)
- A budget and timeline have been established, including contingencies
Partner and Platform Readiness
- Post-migration monitoring and optimisation plans are in place
- A cloud provider with IBM Power capability has been selected
- Migration tools and processes have been confirmed
- Support and escalation procedures are clearly documented
Learn more: Simplify Multi-Cloud Management with a Unified Platform
Make a Cloud Migration with the Right Partner
When done securely and without replatforming, cloud migration can reduce risk and bring critical applications into a modern, scalable environment.
If your current environment is reaching its limits, now is the time to address it with a strategy that doesn’t compromise operational integrity.
Start with an IBM Power cloud environment designed for local compliance, secure workloads, and zero rework. Talk to Evolution Systems about migrating with precision.
