Core-Edge:
This design includes redundant paths between switches,
As the fabric has two or more “core” switches in the centre of the fabric,
This interconnects a number of “edge” switches. Hosts,
Storage and other devices connect to the free ports on the edge switches, in some cases also connect directly to the core switch.
It makes the fabrics highly scalable, without disruption to service.
I consider Core-Edge the most versatile form of SAN design.
Here a picture of Core-Edge Topology:
Core-Edge Topology
Benefits are:
Higher ROI meets RTO, RPO & SLA and helps with consolidation, utilization of storage, and ability to access any storage system from any host.
Core Edge Fabric Nomenclature: n1e*n2c*n3i
Where n1e= number of edge switches, n2c= number of core switches, n3i=number of ISL
