HP HyperFabric manual HMP Supported Configurations, HF2 Speed and Latency w/ HMP Applications

Planning the Fabric

Hyper Messaging Protocol (HMP)

A maximum of 8 HyperFabric adapter cards are supported per instance of the HP-UX operating system. The actual number of adapter cards a particular node is able to accommodate also depends on slot availability and system resources. See node specific documentation for details.

A maximum of 8 configured IP addresses are supported by the HyperFabric subsystem per instance of the HP-UX operating system.

	• Maximum Number of Switches:
		You can interconnect (mesh) up to 4 switches (16 port fibre or Mixed 8 fibre ports) in
		a single HyperFabric cluster.
	• Trunking Between Switches (multiple connections).
		HMP is supported in configurations where switches are interconnected through
		multiple cables. However, with the current release of HMP software, this
		configuration will not eliminate a single point of failure or increase performance.
		Instead, all of the traffic will be sent over a single connection with no failover
		capability and without the performance increase that would come from balancing the
		load over multiple connections.
	•	Maximum Cable Lengths:
		HF2 (fibre): The maximum distance is 200m (4 standard cable lengths are sold and
		supported: 2m, 16m, 50m and 200m).
		HMP supports up to four HF2 switches connected in series with a maximum cable
		length of 200m between the switches and 200m between switches and nodes.
		HMP supports up to 4 hybrid HF2 switches connected in series with a maximum
		cable length of 200m between fibre ports.
	• HMP is supported on the PCI 4X adapters, A6386A.
	• For a list of HF2 hardware that supports HMP on HP-UX 11i v3, see HyperFabric
		Release Notes (B6257-90056).
	•	Speed and Latency
Table 2-2	HF2 Speed and Latency w/ HMP Applications

Server Class

Maximum Speed

Latency

rp7420

2 + 2 Gbps full duplex per link

< 22 microsec

For a list of HF2 hardware that supports HMP on HP-UX 11i v3, see HyperFabric Release Notes (B6257-90056).

HMP Supported Configurations

Multiple HMP HyperFabric configurations are supported to match the performance, cost and scaling requirements of each installation.

In the previous “Configuration Guidelines” section, the maximum limits for HMP enabled HyperFabric hardware configurations were outlined. In this section, the HMP enabled HyperFabric configurations that HP supports will be detailed. These recommended configurations offer an optimal mix of performance, availability and practicality for a variety of operating environments.

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