3.4.0 Matrix Server Administration Guide

Chapter 16: Advanced Topics 182
Copyright © 1999-2006 PolyServe, Inc. All rights reserved.
When a failure occurs on the Primary, the virtual host needs to fail over to
a backup. Matrix Server now looks for the best location for the virtual
host. Because the probe status on the first backup is “down,” Matrix
Server chooses the second backup, where the probe status is “up.”
At i5 in the following example, the probe fails on the Primary. At i6, the
virtual host is deconfigured on the Primary. At i7, the monitor stop script
begins on the Primary. At i8, the virtual host is configured on the second
backup. At i9, the monitor start script begins on the second backup. At
i10, probing begins on the second backup.
Primary
First Bac k up
Second Backup
Vhost status
Probe status
Monitor activity
down
stopping
active
Vhost status
Probe status
Monitor activity
inactive
down
Vhost status
Probe status
Monitor activity
inactive
inactive
i5 i6 i9 i10
inactive
starting
active
inactive
up
up
active
inactive
active
i7 i8
Time