3.6.0 Matrix Server 3.6.0 Administration Guide (5697-7081, December 2007)

Chapter 17: Configure Device Monitors 221

2. ClusterPulse waits for all Stop scripts to complete.

3. The Start script is run on the server where the virtual host or shared

device is becoming active.

PARALLEL. The strict ordering sequence for Stop and Start scripts is not

enforced. The scripts run in parallel across the matrix as a shared device

or virtual host is in transition.

The

PARALLEL configuration can speed up failover time for services and

devices that do not depend on strict ordering of Start and Stop scripts.

Assuming that it is safe to run the scripts in parallel (which depends on

your application), this setting can also increase the chances of a successful

failover because ClusterPulse does not have to wait for the failing node to

finish running its Stop script.

To configure script ordering from the command line, use this option:

--ordering serial|parallel

Virtual Hosts

The Virtual Hosts tab lets you specify the virtual hosts that will fail over if

the monitor detects a failure.