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System operator and MCCS service operator can access to the EMS server where anywhere with internet connection to check on the log and analyze the cause.
In addition, in case of manufacturing customer, it provides a centered monitoring system for all the servers in the factory and also provides a statistic of periodical failure type and trouble-shooting solutions.
The following graph is the workflow if EMS system.
[Figure] Workflow of EMS System
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- There is no difference in the MCCS role resulting from abnormal or normal termination of the server. MCCS will perform a failover to the standby server when the operation server fails.
In the node management menu on the right side of the screen, select the server. You can check the details of failures in the 'Resource Status' & 'Resource Dependency' screens.
Since data cannot be replicated due to the server failure,
will be shown in the mirror disk resource.- Normal Termination of a system
This is a case where user selected 'system shutdown' in operating systems. - Abnormal Termination of a system
This is a case where system is terminated or rebooted due to an unexpected situation or blue screen.
[ Figure] Failure in Active Server - Normal Termination of a system
- Server operators check on the failure and put the server back to normal.
- After checking on the mirror role of two servers when server with the failure is rebooted, switch the server with the failure as replication target and proceed partial resync.
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- When MCCS detects failures of the target disk, it will only determine whether the disk has drive characters.
- Disk failure can be caused by the following. After resolving the above issues, the OS will detect the newly changed disk again.
After that, Datakeeper will proceed with resynchronization.If the mirror disk does not perform synchronization, delete the mirror disk resource and try to create it again.
But when you delete the resource, you must also delete the created mirror and create them again.- Disk controller problems or H/W problems should be fixed by the manufacturers.
- Physical disk problems or H/W problems should be fixed by the manufacturers.
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