3.4.0 Matrix Server Administration Guide

Chapter 13: Configure Device Monitors 165

When a device monitor detects a failure, Matrix Server attempts to fail

over the active virtual hosts associated with that monitor. By default, all

virtual hosts on the servers used with the device monitor are dependent

on the device monitor. However, you can specify that only certain virtual

hosts be dependent on the device monitor.

For example, if you are creating a

SHARED_FILEYSTEM monitor to check

access to a SAN partition containing a PSFS filesystem, select the virtual

hosts associated with applications that access data on that PSFS

filesystem.

As another example, you might have a

DISK monitor for a disk containing

Web and FTP files. If the disk fails, you want Matrix Server to fail over the

virtual hosts for these services. The server might also provide mail

service; however, the virtual host for this service is not dependent on the

disk and should not fail over if the disk fails.

To specify virtual hosts from the command line, use this option:

--vhosts <vhost1>,<vhost2>,...

Servers for Device Monitors

The Servers tab allows you to select the servers on which the device

monitor will be configured. You can also set some options related to the

monitor probe operation and failover.