This appendix provides important reminders for the operation of Resource Coordinator VE.
Server Switchover
Servers can be set up as spare servers even if it may not be possible to switch over with them.
Ensure that server switchover is possible after setting up spare servers.
For details on server switchover conditions, refer to "9.3 Server Switchover Conditions" of the "ServerView Resource Coordinator VE Setup Guide".
Auto-Recovery cannot be performed if maintenance mode has not been released.
Ensure maintenance mode is released once maintenance operations are complete.
Note the following points regarding the occurrence of a fault in the switchover destination spare server during server switchover.
The server switchover state returns to pre-switchover state. Additionally, maintenance mode is set for the switchover source server, and server switchover processing ends. If the switchover source server is stopped, the switchover source server does not start.
Even when more than one spare server is set for the primary server, there is no automatic switch to another spare server. Specify the other spare server, then perform server switchover manually.
To perform operations on the switchover source server, start the server and then release the maintenance mode. When Auto-Recovery is enabled and the switchover source server is faulty, however, Auto-Recovery occurs when the maintenance mode is released. Restore the switchover source server to its pre-fault status and then release the maintenance mode.
Redundant Configurations for the Admin LAN
If communication issues happen on the Admin LAN, or one of the network interfaces (NIC1 or NIC2) used by a managed server on the Admin LAN fails, the following operations may result in errors. In such cases, restore the Admin LAN network as quickly as possible.
Backup and restore operations
Collection and deployment of cloning images
Server switchover and failback
HBA Address Rename
With Resource Coordinator VE, the factory-set WWN of a managed server's HBA is overridden when the HBA address rename function is used. The WWN is reset to its factory-set value when the server is deleted from Resource Coordinator VE.
Before using HBAs in an environment that is not managed by Resource Coordinator VE, first delete the server in which it is mounted using the RC console.
Refer to "6.4.2 Deleting Managed Servers" of the "ServerView Resource Coordinator VE Setup Guide" for information on deleting servers.
The WWN of a managed server is set up during startup, using a network book session to connect to the Admin Server. Once set up with a proper WWN, the managed server reboots into its own Operating System. Therefore, a managed server may reboot during its startup.
Changing the Manager's System Time
When the Admin Server system time is reset to a time in the past, the resource monitoring by the Manager stops for this period. To reset the system time to more than just a few minutes in the past, return the time and then restart the Manager.
To restart the Manager, refer to "5.1 Manager" in the "ServerView Resource Coordinator VE Setup Guide".
