
Chapter 14. Performance considerations for System z servers 527
The link between the director and the DS8000 can run at 1, 2, 4, or 8 Gbps.
If the channel is point-to-point connected to the DS8000 FICON port, the G field indicates the
speed that was negotiated between the FICON channel and the DS8000 port.
Figure 14-16 Channel Path Activity report
14.11.5 FICON director
The FICON director is the switch that is used to connect the host FICON channel to the
DS8000 FICON port. FICON director performance statistics are collected in the System
Management Facilities (SMF) record type 74 subtype 7. The FICON DIRECTOR ACTIVITY
report (Example 14-4 on page ...