Planning the Fabric
Hyper Messaging Protocol (HMP)
nodes in a cluster. ServiceGuard cannot use the HyperFabric interconnect as a heartbeat link. Instead, a separate LAN must be used for the heartbeat.
For more information on configuring ServiceGuard, see “Configuring
HyperFabric with ServiceGuard” on page 87, as well as Managing
MC/ServiceGuard Part Number
•High Availability (HA): Supported
When applications use HMP to communicate between HP 9000 nodes in a HyperFabric cluster, you can configure ServiceGuard and the EMS monitor to identify node failure and automatically failover to a functioning HP 9000 node.
For more information on HA when running HMP applications, contact your HP representative.
•Transparent Local Failover: Supported
HMP supports Transparent Local Failover in the HyperFabric version B.11.23.01.
When a HyperFabric resource (adapter, cable, switch or switch port) fails in a cluster, HMP transparently fails over traffic using other available resources. This is accomplished using card pairs, each of which is a logical entity that comprises a pair of HF2 adapters on a HP 9000 node. Only Oracle applications can make use of the Local Failover feature. HMP traffic can only fail over between adapters that belong to the same card pair. Traffic does not fail over if both the adapters in a card pair fail. However, administrators do not need to configure HF2 adapters as card pairs if TCP/UDP/IP is run over HF2 or MPI uses HMP.
When HMP is configured in the local failover mode, all the resources in the cluster are utilized. If a resource fails in the cluster and is restored, HMP does not utilize that resource until another resource fails.
For more information on Transparent Local Failover while running HMP applications, see “Configuring HMP for Transparent Local Failover Support” on page 96.
•Dynamic Resource Utilization (DRU): Partially Supported
If you add a new HyperFabric resource (node, cable or switch) to a cluster running an HMP application, the HyperFabric subsystem will dynamically identify the added resource and start using it. The
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