PowerHA是IBM为其生产的P系列unix服务器产品推出的集群软件，主要应用于AIX操作系统上

早期的版本名字是hacmp，相关内容参考hacmp, HACMP5.5版本开始，hacmp名称更改为PowerHA

最新的PowerHA版本为PowerHA7.1

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♦