HP Surestore 64 FW 05.01.00 and SW 07.01.00 HP StorageWorks SAN High Availabil - Page 92
Mesh Fabric, Full mesh fabric, ISL fails
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Planning Considerations for Fibre Channel Topologies Mesh Fabric There are two types of mesh fabrics: full mesh and modified (or partial) mesh. In a full-mesh topology, every director or switch is directly connected to all directors and switches in the fabric. The maximum hop count between fabric-attached devices is one hop. Figure 38 illustrates a full-mesh fabric topology. TM TM TM TM Interswitch Link Fabric Connection Figure 38: Full mesh fabric Full-mesh fabrics provide increased resiliency over cascaded or ring fabrics, and are well suited for applications that require any-to-any connectivity. If a single ISL fails, traffic is automatically routed through an alternate path. Mesh fabrics also form effective backbones to which other SAN islands can be connected. Traffic patterns through the fabric should be evenly distributed, and overall bandwidth consumption is low. 92 SAN High Availability Planning Guide