HP StorageWorks Storage Mirroring for Linux User's Guide (T2558-96078, February 2008)

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Communication ports
The Storage Mirroring daemon and the Failover Control Center use two ports for various Storage Mirroring communications.
 Service Transmit Port—The Failover Control Center uses this port to send commands to Storage Mirroring servers.
 Heartbeat Listen Port—The Failover Control Center uses this port to listen for heartbeats transmitted from Storage
Mirroring servers.
To view or modify the port settings in the Failover Control Center, select
Settings, Communications.
Failover Control Center window refresh rate
The failover client periodically requests information from the source and target. Depending on the type of information, the
request may be a machine-specific request, like obtaining the Time to Fail status from a target, or may be a general request,
like determining which machines are running Storage Mirroring.
The rate at which these requests are made can be modified through the Failover Control Center. Select
Settings, Refresh
Rate
. The default update interval is one second.
A lower refresh rate value updates the information in the Failover Control Center window's
Monitored Machines tree more
often, but also generates more network traffic and higher utilization on the client and target machines.
A higher refresh rate value updates the information less frequently, but minimizes the network traffic.
NOTE: Since the Management Console and the Failover Control Center share port settings, if the Storage Mirroring
daemon is restarted, changes to the port settings that were made in the Failover Control Center are reflected
in the Management Console.
If the Storage Mirroring daemon is not restarted, the changes will occur in the Failover Control Center only.