Hitachi TrueCopy (TM) for Mainframe User Guide: HP XP24000 Disk Array, HP XP20000 Disk Array (T5211-96014, May 2011)

Figure 13 Fibre Channel Remote Copy Connection Configurations
Direct connection (see “Fibre Channel Interface Direct Connection (NL_Port)” (page 72)): Two
devices are connected directly together.
Switch connection (see “Fibre Channel Interface Switch Connection (NL_Port or N_Port)”
(page 72)): Up to three optical fibre cables are connected together via the switches to connect
the devices. Up to two switches can be used.
Extender connection (see “Fibre Channel Interface Extender Connection (page 73)): Channel
extenders and switches are used to connect the devices across large distances.
Installing the Hardware 71