When you are planning to use Fibre Channel extenders, be aware that the performance of the link to the remote location decreases as the distance to the remote location increases.
For Fibre Channel IP extenders, throughput is limited by latency and bit error rates. Typical I/O latency can be expected to be 10 microseconds per kilometer. Bit error rates vary depending on the quality of the circuit that is provided.
You must review the total throughput rates that might be expected for your planned configuration with the vendor of your Fibre Channel extender and your network provider.