Server switchover is a function that enables applications to be switched over to and restarted on a pre-assigned spare server when a primary server fails or needs to be shut down for maintenance.
Server switchover is the basis for the Auto-Recovery function, which is able to automatically switch over applications to a spare server upon failure.
Server switchover settings must be configured before using the server switchover function.
For details on server switchover settings and an overview of the server switchover function, refer to "Chapter 18 Settings for Server Switchover" in the "User's Guide VE".
Note
When the switchover method is backup and restore
When backing up or restoring system images, or collecting and deploying cloning images, up to four processes can be executed simultaneously. If four processes are already being executed, any system image restore triggered by a switchover or failback operation will enter a standby state.
Any process put under standby state will be resumed after one of the already running processes completes.
When the MAK method is used for license authentication
The license authentication may be requested again after server switchover or failback operations. In such cases, authenticate again as quickly as possible.
When the switchover method is storage affinity
If switchover to spare servers is performed, the storage settings of the spare servers will be deleted.
Perform restoration referring to "4.3 Post-Switchover Operations".
After switchover to spare servers is performed, even if failback is performed the storage settings for the spare servers are not automatically restored.
Restore the zoning and host affinity settings for storage units of spare servers following the procedure listed in the "Information" in "4.3 Post-Switchover Operations".
