IBM PowerHA SystemMirror for i overview
After you determine your business goals and requirements, you need to
choose the right IBM® i high availability solution that
fits your business. IBM PowerHA® SystemMirror® for i is an IBM product that provides a complete high availability solution for IBM i production environments. It provides data, application, and
environment resilience, as well as a management interface, which allows seamless configuration and
operation. 
This section compares the technologies available within the IBM PowerHA SystemMirror for i product.
- Comparison of PowerHA data resiliency technologies
Data resiliency allows data to remain available to applications and users even though the system that originally hosted the data fails. Choosing the correct set of data resiliency technologies in the context of your overall business continuity strategy can be complex and difficult. It's important to understand the different data resilience solutions that can be used to enhance availability in multiple system environments. You can either choose a single solution or use a combination of these technologies to meet your needs. The following topics compare and contrast the different data resiliency technologies within the PowerHA product. - HA Technologies combined
Most of the technologies available in PowerHA can be combined to provide a higher level of availability and protection against more outage types. - High availability management
To plan, configure, and manage a complete high availability solution requires a set of management tools and offerings. With IBM i systems, several choices exist for high availability management.
Parent topic: High availability overview