HP StorageWorks SAN Virtualization Services Platform Best Practices Guide (5697-0935, May 2011)

Monitoring ISLs
If ISLs are being used, set up alert or notification levels on the switches to ensure that the utilization
of the links are monitored. Sizing of ISLs can frequently cause issues, because the ISLs must be
able to support the bandwidth needed.
Size the SVSP solution appropriately
The performance sizing numbers have changed since many of SVSP solutions have been sold.
Refer to the latest numbers and analyze your performance needs.
64 Remedies for SAN and SVSP issues