HP HyperFabric manual Configuration Parameters

Planning the Fabric

TCP / UDP / IP

For more detailed information on HyperFabric diagnostics see “Running Diagnostics” on page 115 on page 149.

Configuration Parameters

This section details, in general, the maximum limits for TCP/UDP/IP HyperFabric configurations. There are numerous variables that can impact the performance of any particular HyperFabric configuration. See the “TCP/UDP/IP Supported Configurations” section for guidance on specific HyperFabric configurations for TCP/UDP/IP applications.

•HyperFabric is only supported on the HP 9000 series unix servers.

•TCP/UDP/IP is supported for all HyperFabric hardware and software.

•Maximum Supported Nodes and Adapter Cards:

In point to point configurations the complexity and performance limitations of having a large number of nodes in a cluster make it necessary to include switching in the fabric. Typically, point to point configurations consist of only 2 or 3 nodes.

In switched configurations, HyperFabric supports a maximum of 64 interconnected adapter cards.

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)

Trunking between switches can be used to increase bandwidth and cluster throughput. Trunking is also a way to eliminate a possible single point of failure. The number of trunked cables between nodes is only limited by port availability. To assess the effects of trunking on the performance of any particular HyperFabric configuration, consult with your HP representative.

•Maximum Cable Lengths:

HF2 (fibre): The maximum distance is 200m (4 standard cable lengths are sold and

supported: 2m, 16m, 50m and 200m).

TCP/UDP/IP 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.

TCP/UDP/IP supports up to 4 hybrid HF2 switches connected in series with a maximum cable length of 200m between fibre ports.

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