Planning advanced node failure detection

Advanced node failure detection function can be used to reduce the number of failure scenarios which result in cluster partitions.

Before implementing advance node failure detection, you must ensure that you have met all the prerequisites.

  • To prevent cluster partitions when a cluster node has actually failed, a Hardware Management Console (HMC) v7 or Virtual I/O Server (VIOS) partition on an Integrated Virtualization Manager (IVM) managed server can be used.
  • For each cluster node, determine the type of server that the cluster monitor will be using to monitor that node. If the node is managed either by an IVM or by an HMC at version V8R8.5.0 or earlier, then a common information model (CIM) server can be used. If the node is managed by an HMC at version V8R8.5.0, then a representational state transfer (REST) server can be used.
    Note: For cluster nodes managed by HMCs at version V8R8.5.0, you may choose to use either a CIM server or a REST server. The REST server is recommended because CIM servers are not supported for later versions of HMC.
  • Each node that is to have failures reported to it, will need to have a cluster monitor configured.