IBM eserver i5 Handbook page 470

5486ExtStor.fm
High-availability design with redundant power supplies and cooling fans,
automatic failover, concurrent firmware activation and call-home with Fabric
Manager V4
Up to 8Gbps aggregate speed ISL trunking
Advanced fabric services such as end-to-end performance monitoring
WEBTOOLS and Fabric Manager V3, V4 management software
FICON, FCP and FICON/FCP intermix
Secure Fabric OS
IBM Eserver i5 and iSeries System Handbook
436
Draft Document for Review October 18, 2004