HP Storage Mirroring Software - Manual (Page 79)

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
Click Browse to search for a machine. Select a domain from the list box at the top of the
Select Machine dialog box to list the available machines for that domain. Highlight a source
to be monitored and click OK.

Click Custom. Enter the name of the server and click Add. Specify the IP address and subnet
mask of the specified server and click OK. Click OK again.
The Insert Source Machine dialog closes and the Monitor Settings dialog remains open with your
source listed in the Names to Monitor tree.
6. In the Names to Monitor tree, locate and select the IP addresses on the source that you want
to monitor.
7. Highlight an IP address that you have selected for monitoring and select a Target Adapter that
will assume that IP address during failover. Repeat this process for each IP address that is being
monitored.
8. Highlight an IP address that you have selected for monitoring and select a 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. Repeat this step for each IP address that is
being monitored.
9. Highlight an IP address that you have selected for monitoring and select the Missed Packets.
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. Repeat this step for each IP address that
is being monitored.
10. Highlight the source name and specify the Items to Failover, which identifies which source
components you want to failover to the target.

IP Addresses—If you want to failover the IP addresses on the source, enable this option and
then specify the addresses that you want to failover.

Monitored only—Only the IP address(es) that are selected for monitoring will be failed
over.
NOTE: Current IP Addresses displays the IP address(es) currently assigned to the selected
target adapter.
NOTE: To achieve shorter delays before failover, use lower Monitor Interval and Missed
Packets values. This may be necessary for IP addresses on machines, such as a web
server or order processing database, which 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.