Hp Storage Mirroring Software User Manual Page 228

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l Application Monitoring—In non-cluster environments, you can monitor an
application via a monitoring script. The script can be WMI, PowerShell,
Visual Basic, or JScript.
l Monitor Interval—This setting identifies the number of seconds between the
monitor requests sent from the target to the source to determine if the source
is online. The default setting depends on the Method to Monitor for
Failover.
l Failure Count—This setting is the number of monitor replies sent from the
source to the target that can be missed before assuming the source machine
has failed. The default setting depends on the Method to Monitor for
Failover.
Note: To achieve shorter delays before failover, use lower Monitor Interval
and Failure Count values. This may be necessary for IP addresses
on servers that must remain available and responsive at all times.
Lower values should be used where redundant interfaces and high-
speed, reliable network links are available to prevent the false
detection of failure. If the hardware does not support reliable
communications, lower values can lead to premature failover. To
achieve longer delays before failover, choose higher values. This may
be necessary for IP addresses on slower networks or on a server that
is not transaction critical. For example, failover would not be
necessary in the case of a server restart. Additionally, in a cluster
environment, you must take into account the time it will take for a
virtual server to failover between nodes.
l Monitored IPs—Mark the IP addresses on the source that you want the
target to monitor.
l Failover Trigger—Specify if you want failover to be triggered when all
monitored IP addresses fail or if only one of the monitored IP addresses fail.
l Application Monitoring Settings—If you selected Application Monitoring
as your Method to Monitor for Failover, you need to configure the script that
will monitor your application.
l Monitoring Option—You have a choice of two monitoring methods.
l Built-In Monitoring—Storage Mirroring Recover will monitor the application
using WMI. Specify if you want Storage Mirroring Recover to Attempt to
restart services if the application services are not responding.
l Customer Monitoring Script—Click Browse to locate your own custom
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