A High Availability Controller (HAC) has limited support for spare scenarios. It can be used in a spare, but before the HAC instance in the primary server is able to start monitoring the HSB state of the spare server, the connect information for the primary HAC (RemoteDB.Connect) must be updated. You must update the solidhac.ini file and restart the HAC in the primary server.

Similarly, the HAC in the spare server needs the connect information of the primary server. If the connect information is not known beforehand, the information must be added in the solidhac.ini file. After you have added the information to solidhac.ini, you must restart HAC.