Hitachi TrueCopy for z/OS (T1711-96009, June 2006)

52 TrueCopy for the XP1024/XP128/XP12000/XP10000
• N port: Fab on, Point-to-Point
Figure 9 Fibre Channel interface extender connection
Serial Remote Copy Connections
The following figure shows the TC390 serial remote copy connection configurations. The MCU and RCU of
each TC390 pair must be connected through multimode ESCON cables. For distances greater than 3 km,
single-mode cables up to 20 km in length and IBM 9032/9033 ESCDs and/or 9036 ESCON repeaters
are required. Dedicated ESCON channels may be installed, or existing ESCON channels connected by
ESCDs may be used. The IBM 9032/9033 ESCD supports the extended distance facility (XDF), which uses
single-mode ESCON cables up to 20 km. The IBM 9036 ESCON repeater supports
single-mode-to-single-mode connection or single-mode-to-multimode connection. When TC390 disk arrays
are more than 9 km apart, the XDF connections provided by the ESCDs or ESCON repeaters are required.
TC390 operations can be performed at distances of up to 43 km (26.7 miles) using standard ESCON
support. Long-distance solutions are provided, based on user requirements and workload characteristics,
using approved channel extenders and communication lines.
Figure 10 Serial remote copy connection configurations
The ESCDs can accommodate multiple MCU-RCU remote copy connections.
Figure 11 N pairs of remote copy connections