If an Agent in the sysplex stops, all resource records in the ADNR-managed name servers that represent sysplex resources managed by that Agent are removed from the name server. This makes it appear as though the resources are unavailable when they actually might be available. For this reason, it is important to perform the necessary configuration for optimal availability of each Agent. For more information, see Step 1: Configure the Advisor and Agents to automatically restart in case of application or system failure (optional).
The Agent is also capable of making resources appear unavailable to ADNR by quiescing them with the Agent's MODIFY QUIESCE command. All resource records in a name server associated with a quiesced member are removed and are not added back until the member is enabled with the Agent's MODIFY ENABLE command, or if the Agent is stopped and restarted.