HP StorageWorks 4000/6000/8000 .HP StorageWorks SAN Design Reference Guide, Pa - Page 40
Ring fabric
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Figure 4 ISL connections in a meshed fabric . 25092a Switch models All HP Fibre Channel switches are supported for use in a meshed fabric topology. Meshed fabric topologies typically use the SN6000 Fibre Channel Switch; the 8/20q Fibre Channel Switch (or the HP Simple SAN Connectivity Kit); or SAN, Fabric, or Edge switches, which support smaller incremental growth. To meet higher port-count requirements, use Core or Director switches. Benefits The benefits of a meshed fabric include: • Ability to meet multiple data access needs • Multiple paths for internal fabric resiliency • Ease of scalability • Shared backup and management support • Support for a mix of local and distributed data access (see "Topology data access" on page 46) • Less impact on performance due to intraswitch traffic Ring fabric A ring fabric is a ring of interconnected switches (Figure 5). The ring fabric provides a similar level of fabric resiliency as the meshed fabric and ensures full fabric connectivity with a minimum of two paths for each switch. The ring fabric enables you to: • Scale the fabric in a modular fashion. • Achieve optimum I/O performance by connecting a group of servers and storage to one switch. 40 SAN fabric topologies