ApplicationHA introduces another layer of application control wherein you can configure ApplicationHA itself to restart a virtual machine using native operating system commands. It is useful in cases where there is a need to first bring down other healthy applications and dependent components before actually restarting the virtual machine and also in VMware virtualization environments where VMware HA is not available.

ApplicationHA-initiated reboot works independently of VMware HA functionality. It is not intended to replace VMware HA. ApplicationHA-initiated reboot complements VMware HA by offering an additional layer of control that helps in building customized application management and recovery plans in virtualization environments.

Refer to the Symantec ApplicationHA User's Guide for more information.