ExpressCluster X 2.0 for Windows Reference Guide - Nec

When activating or deactivating network partition resolution
resource fails
1. Majority method
Memory or OS resources may not be sufficient. Check them.
2. COM method
The cause may be one of the following:
Section III Maintenance information
Troubleshooting
- The specified device name (such as COM1 and COM2) may not exist in the system.
Confirm that the device name specified by the Builder exists in the system.
- Other application may be using the device name specified by the Builder (such as COM1
and COM2). Check the device name.
3. PING method
Memory or OS resources may not be sufficient. Check them.
4. DISK method
The settings of the Builder are invalid. Check that the disk heartbeat partition is set to be
filtered on the HBA tab of Server Properties of the server that failed to be activated or
deactivated. Check that the disk heartbeat partition is not used by other resource (disk
resource, mirror disk resource).
When a network partition resolution resource error is detected
1. Majority method
Memory or OS resources may not be sufficient. Check them.
2. COM method
Communication between the servers by the COM method cannot be performed. Confirm
that the serial cable is connected to the device specified by the Builder properly.
3. PING method
There is no PING command response from the PING destination device. Check that there is
no problem in the communication path from the cluster server to the PING destination
device.
4. DISK method
Time-out occurred in accessing the disk heartbeat partition, or disconnection of the cable to
the shared disk was detected.
If a time-out has occurred, select Tuning on the Network Partition Resolution I/F tab of
Tuning. Select the disk network partition resolution resource with an error on the Disk tab
of the NP Resolution Tuning Properties dialog, and adjust IO Wait Time from Edit.
If cable disconnection is detected, check the cable connection status.
Network partition resolution resource becomes unavailable
A combination of network partition resolution resources is invalid. Refer to Chapter 9, “Details
on network partition resolution resources” and change the settings by using the Builder.
773