The Best Strategy

PowerHA changes the IBM i HA and DR game

PowerHA changes the IBM i HA and DR game
Illustration by Chris Gall

It’s been just over a year since IBM announced the game-changing PowerHA* for i, the Power* Systems solution for disaster recovery (DR) and high availability (HA). PowerHA for i is based on clustering, independent auxiliary storage pools (IASPs), and IBM System Storage* or IBM i integrated storage.

For those familiar with PowerHA for AIX*, an enormously successful product among AIX users, the underlying architectural constructs for PowerHA on i are analogous. (You may know PowerHA for AIX as High Availability Cluster Multi-Processing, or HACMP.) If you’re a traditional IBM i shop, you’re going to hear more about PowerHA for i as your colleagues in the IT industry move to IBM i 6.1 and the inevitable growth in PowerHA deployment ensues.

With a year’s perspective, now is a good time to gauge Power HA for i’s significance in the HA market and consider what lies ahead.

A Look Back

In January 2008, IBM announced PowerHA for i, a licensed program product that, when combined with IBM i’s high-availability switchable resources (HASR or Option 41), lets you deploy a hardware-based HA and DR solution.

Once the application has been deployed into IASPs, the data mirroring between systems is inherently self-managing.

Steve Finnes is the System i Business Continuity product manager with IBM. Steve can be reached at

comments powered by Disqus



2019 Solutions Edition

A Comprehensive Online Buyer's Guide to Solutions, Services and Education.

Achieving a Resilient Data Center

Former IBM exec Bob Angell shares his insights on improving data-center resiliency

Achieving HA

Using cluster resource groups for high availability

Announcing IBM High Availability

Customers have asked for an end-to-end high-availability solution from IBM, and it delivers with HASM.

IBM Systems Magazine Subscribe Box Read Now Link Subscribe Now Link iPad App Google Play Store
IBMi News Sign Up Today! Past News Letters