4.1.0 HP PolyServe Matrix Server administration guide (T5392-96073, October 2010)

If the virtual host fails over to a backup node, the monitor instance on the original
node becomes inactive and the probe is no longer run on that node. Matrix Server
activates the virtual host on the new node, which causes the monitor instance on that
node to change status from “standby” to “active.” The monitor then begins probing
on that node and the Start script starts the application.
If the monitor instance cannot be activated on the new node, the virtual host will fail
over to another backup node if possible.
Custom scripts
The Scripts tab lets you customize a service monitor with Start, Stop, and Recovery
scripts. You can also configure the event severity and script ordering for the service
monitor.
Scripts
Service monitors can optionally be configured with scripts that are run at various
points during cluster operation. The script types are as follows:
Recovery script. Runs after a monitor probe failure is detected, in an attempt to restore
the service.
Configure service monitors212