Thecus N8900 series User Manual page 129

HA Recovery:
If one of the HA member is down and need to be recovered, simply go to the RAID
management page and the "HA Recovery" icon will be available.
Click on the "HA Recovery" icon, then the system will prompt a box to inquire about
the Active server heartbeat link IP address. After inputting the IP address and
pressing Apply, the unit will be recovered fully.
Another circumstance where HA recovery might be needed is when the HA button
has been enable but the system detected a previously existing HA configuration.
Then the screen will prompt the message box as shown below:
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