The number of ISLs between edge and core switches characterizes the core-edge fabric types. The first number indicates the number of edge ports. The second number indicates the number of ISLs used by the edge ports to connect to a core switch in the fabric.
Recommended core-edge fabric ISL ratios | I/O workload Recommended ratios |
Higher I/O data intensive application requirements (> 70 MB/s at 2 Gb/s, > 140 1:1 to 3:1 MB/s at 4 Gb/s, > 280 MB/s at 8 Gb/s) | 1:1 to 3:1 |
Lower I/O data intensive application requirements (< 70 MB/s at 2 Gb/s, < 140 7:1 to 15:1 MB/s at 4 Gb/s, < 280 MB/s at 8 Gb/s) | 7:1 to 15:1 |
7:1 for typical distributed data access is recommended.
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