Thecus N8900 series User Manual page 110

HA Recovery:
If one of HA member is went down and need to recovery afterward. Simply go to
the RAID management page and the "HA Recovery" icon is available.
Click on "HA Recovery" icon then system will prompt the box to require Active
server heartbeat link IP address. After input the IP address and press Apply, the
unit will be recovery fully.
The other circumstance is while HA has enable button checked, but system has
detected it has previous HA configuration existed. Then the screen will prompt
message box as below:
If the other HA member is running smoothly, please choose "Recovery HA" to
complete HA recovery. Or select "No, continue" to let both HA members has same
action taking.
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