HP manual How HyperFabric Handles Adapter Failures

Configuring HyperFabric

Configuring HyperFabric with MC/ServiceGuard

Figure 4-2 An MC/ServiceGuard Configuration (with Two HyperFabric Switches)

Ethernet Heartbeat LAN 1

	Ethernet Heartbeat LAN 0
node A			node B
HF			HF
adapter 1			adapter 0
HF			HF
adapter 0			adapter 1
Ethernet Port	HF	HF	Ethernet Port
switch 0		switch 1
node C			node D
HF			HF
adapter 0			adapter 1
HF			HF
adapter 1			adapter 0
S			S
S			S

How HyperFabric Handles Adapter Failures

HyperFabric adapters are handled differently than other types of networking adapters (such as Ethernet, FDDI, and Fibre Channel) in the MC/ServiceGuard environment. In the non-HyperFabric cases, two network links are in a node, and one will be active and one will be idle or in standby. In the case of an active link failure, MC/ServiceGuard is notified and the network traffic is switched to the standby adapter (which then becomes active).

However, in the case of HyperFabric, if two adapters are in a node, both will be active. If one active HyperFabric adapter fails, its network traffic is switched to the other active HyperFabric adapter in the node. (Throughput might be slower because only one active

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