ExpressCluster X 2.0 for Windows Reference Guide - Nec

Section III Maintenance information
Media sense function becomes invalid
Running the forcible mirror recovery from the WebManager only
on one server
In some cases, you cannot start one of the servers due to a hardware or OS failure, and the server
that can be started may not have the latest data. If you want to start applications at least on the
server that can be started, you can perform the forcible mirror recovery on that server.
However, remember that if you do this, the data on the server where you run this command
becomes the latest data no matter which server actually has it. Therefore, even if the other server
becomes available later, you cannot handle the data in that server as the latest one. Make sure
you understand the consequence before running the following command.
Start the Mirror Disk Helper from the WebManager to start the forcible mirror recovery. Select
the icon of the server, which you want to perform the forcible mirror recovery. The icon will be
changed as follows. Click Execute to perform the forcible mirror recovery processing.
When the forcible mirror recovery is successfully completed, you can activate the groups and use
the mirror disks.
Media sense function becomes invalid
Media sense function is the OS function that detects disconnection of network cable. When
disconnection is detected, TCP/IP receives a notification from the media sense function and
renders the information such as an IP address assigned to the disconnected network card
unavailable while it is disconnected. ExpressCluster cannot be operated properly if the
information such as IP address becomes invalid during its operation, so the media sense function
is rendered invalid when installing ExpressCluster.
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