IBM AIX PowerHA (formerly known as HACMP)

From small 2-Node Clusters to large multi-node, multi-site configurations we can design, build and maintain your HA cluster.

High availability provides access to critical business applications and data in the event of a failure high availability solutions minimize and sometimes eliminate the impact of planned and unplanned outages/failures and sitewide failures for your business.

We provide High availability solutions that provide fully automated failover to a backup-system/ Node so that users and applications can continue working without impact.

A deployment of an application in a high availability cluster requires proper cluster planning,designing, implementation, testing and ongoing administration.

Our HA specialist team has the right processes, perfect skills and experience to deploy or assist in the deployment of your application in a high availability cluster and admistration.

•   Achieve 24/7  availability with reasonable costs
•   Failover applications without impacting other applications for faster, more efficient recovery
•   Ensure business continuity for your customers and employees

What is PowerHA

•    IBM PowerHA (formerly HACMP) is IBM's solution for high-availability clusters on the AIX Unix and Linux for IBM System p platforms and stands for High Availability Cluster Multiprocessing. IBM's HACMP product was first shipped in 1991 and is now in its 20th release - PowerHA SystemMirror for AIX 7.1

•    PowerHA can run on up to 32 computers or nodes, each of which is either actively running an application (active) or waiting to take over when another node fails (passive). Data on file systems can be shared between systems in the cluster.

•    PowerHA relies heavily on IBM's Reliable Scalable Cluster Technology (RSCT). PowerHA is an RSCT aware client. RSCT is distributed with AIX. RSCT includes a daemon called group services that coordinates the response to events of interest to the cluster (for example, an interface or a node fails, or an administrator makes a change to the cluster configuration). Up until PowerHA V6.1, RSCT also monitored cluster nodes, networks and network adapters for failures using the topology services daemon (topsvcs). In the current release (V7.1), RSCT provides coordinate response between nodes, but monitoring and communication are provided by the Cluster Aware AIX (CAA) infrastructure.

•    The 7.1 release of PowerHA relies heavily on CAA, a clustering infrastructure built into the operating system and exploited by RSCT and PowerHA. CAA provides the monitoring and communication infrastructure for PowerHA and other clustering solutions on AIX, as well as cluster-wide event notification using the Autonomic Health Advisor File System (AHAFS) and cluster-aware AIX commands with clcmd. CAA replaces the function provided by Topology Services (topsvcs) in RSCT in previous releases of PowerHA/HACMP.