FW V06.XX/HAFM SW V08.02.00 HP StorageWorks SAN High Availability Planning Guide (AA-RS2DD-TE, July 2004)

Planning Considerations for Fibre Channel Topologies
97SAN High Availability Planning Guide
Figure 40: 4-by-12 Core-to-Edge fabric
A core-to-edge topology offers any-to-any device connectivity, and evenly
distributes traffic bandwidth throughout the fabric. The topology provides the
most flexible architecture to address fabric performance, traffic locality, data
integrity, connectivity, and scalability requirements.
The simplest core-to edge fabric has two or more core switching elements that
may or may not be connected (simple or complex). In a simple core topology, as
shown in Figure 39, core switches are not connected. In a complex core topology,
as shown in Figure 40, core switches are connected. The figure also illustrates a
topology where the core is a full-mesh fabric.
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Interswitch Link
Fabric Connection
Tier 3 Devices
Edge
Switches
Tier 1
Devices
Edge
Switches
Core
Directors
Core
Directors
Tier 1
Devices
Tier 3 Devices