Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

3-16 Preparing for TrueCopy for z/OS Operations
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
Fibre-channel interface connection provides three different configurations (see
also the LUN Manager User’s Guide):
• Direct connection (see Figure 3-2): Two devices are connected directly
together.
• Switch connection (see Figure 3-3): 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 Figure 3-4): Channel extenders and switches are
used to connect the devices across large distances.
Initiator port
Ordinary fibre-channel
interface port (target port)
MCU
Host
(Primary)
RCU
RCU target port
Host
(Secondary)
NL Port *
* To set ports, use LUN Manager and set port topology to: Fab off, FC-AL.
Figure 3-2 Fibre Channel Interface Direct Connection (NL_Port)
Initiator port
Ordinary fibre-channel
interface port (target port)
MCU
Host
(Primary)
RCU
Switch
RCU target port
Host
(Secondary)
FL_Port
or F Port
[1]
NL_Port
or
N Port
[2]
E Port
FL_Port
or F Port
[1]
1. Some switch vendors require F port (e.g., McData ED5000).
2. To set ports, use LUN Manager and set port topology to:
NL port: Fab on, FC-AL
N port: Fab on, Point-to-Point
Figure 3-3 Fibre Channel Interface Switch Connection (NL_Port or
N_Port)