Thecus N8900 series User Manual page 104

iv. Choose the "Auto Failback" option, the default is disabled. For more details
for auto failback, please refer description below.
Auto Fail Back:
v. Filled in the "Virtual Server" hostname information for further access need.
We have this example "HApm" for virtual server hostname.
vi. Filled in the "Secondary Server" hostname information. We have this
example "PMS" for secondary server hostname. Please be sure the
associated Secondary server with host name "PMS" been setup.
vii. Filled in "Virtual IP" information:
In legacy Heartbeat clusters, the auto failback option would
determine whether a resource would automatically fail back to
its "Active" node, or remain on whatever node is serving it until
that node fails, or an administrator intervenes. The possible
values for auto failback were:
on - enable automatic failbacks
off - disable automatic failback
When auto failback is off (default): After the original
active server is damaged and then returned to a healthy
state, the original standby server will remain active and
the original active server will go into standby mode. The
servers will exchange roles.
When auto failback is on: After the original active server is
damaged and then returned to a healthy state, the original
standby server will go back into standby mode and the
original active server will become active again. The
servers return to their original roles.
With or without auto failback, synchronization will begin
immediately without a break in service when the damaged
server returns. The roles described above are assumed
immediately and do not need to wait for synchronization.
The virtual IP will always be mapped to the current active
server.
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