HP StorageWorks XP Remote Web Console Software - Manual (Page 84)

84 Hitachi TrueCopy z/OS for HP XP12000/XP10000 and SVS 200 storage systems
• RCU target: The Fibre Channel ports in the RCU that will be used to communicate with the MCUs must
be configured as RCU target ports.
• External: This attribute can be set by the Universal Volume Manager software. The external port is
used for Universal Volume Manager, not TrueCopy for z/OS. To use this port for TrueCopy for z/OS,
change the attribute to the initiator, RCU target or target port.
• Initiator/External: This setting shows the combination of ports that have an initiator port and an
external port attributes. Only a port that has an initiator port attribute within these ports can be used for
TrueCopy for z/OS. This attribute cannot be changed by the TrueCopy for z/OS software. For details
on the port to which an initiator/external mix mode is set, see the HP StorageWorks XP External
Storage user guide for your disk array model.
NOTE: Note: The port assigned to SLPR other than SLPR0 can be set to the Target port attribute only.
The disk array serial interface ports can be configured as LCPs or RCPs.
• LCP: The serial ports which will be connected to the host must be configured as LCPs (default). LCP
mode is used for host processor channel interface. The serial ports in the RCU that will be used to
communicate with the MCUs must also be configured as LCPs.
• RCP: The serial ports which will be used for TC390 communications to the RCUs must be configured as
RCPs. RCP mode emulates a host channel to enable the MCU to send write I/O operations directly to
the RCU. The RCPs must be configured before you can add the RCUs and create the TC390 pairs.
The serial interface ports, 1S-1Z and 2S-2Z, cannot be specified as RCPs.
The External port that appears on the RCU Operations window cannot be used with TC390.
NOTE: The attribute of the port assigned to SLPR except SLPR0 cannot be set to the attribute except Target
or LCP.
Before changing a Fibre Channel port to an initiator port, disconnect the port from the host, delete all
affected TC390 pairs, delete all paths from the port to the MCU (if RCU target), and then remove all
channel paths to the port.
Also, before changing a Fibre Channel port from initiator to target or RCU target, delete all affected TC390
pairs, delete all paths from the initiator port to the RCU, and then delete the RCU from the MCU.
Before changing the operation mode of a serial port from LCP to RCP, remove all channel paths to the
specified port using host system console or ESCD commands. Before changing the mode of a port from
RCP to LCP, delete all affected TC390 pairs, delete all paths to the RCU from that RCP, and then delete the
RCU from the MCU.
Limit the number of hosts connected to an RCU target port to 128 or fewer to avoid mistaken disconnection.
If more than 128 hosts are connected to an ordinary target, some hosts may be disconnected after
changing the type from target to RCU target.
To configure the Fibre Channel or serial ports:
1. Click Port in the Display box on the RCU Operations window to change the tree to the Port tree and the
list to the Port list.
2. Select a port or a port type from the Port tree. Only the selected port or the selected port type is
displayed in the Port list.
3. Select the port(s) of the CU that you want to configure from the Port list.
4. Right-click to display the pop-up menu, which consists of Initiator, RCU Target, and Target for the Fibre
Channel, or RCP and LCP for the Serial channel.
5. Click a port type from the pop-up menu.
For the port change operation, there is no separate window and the list continues to display the Port list.