Hitachi TrueCopy for z/OS user guide (December 2005)

TrueCopy for z/OS user guide 77
• Modifying the RCU options (see page 84)
• Deleting RCUs (see page 91)
• Adding and deleting logical paths to an RCU (see page 91)
• Adding and deleting SSIDs for an RCU (see page 94)
• Modifying parameters and omitting selected settings (see page 95)
From the RCU Operations window (see page 66), you can perform the RCU operations. All the operations
that can be performed from the RCU Operations window have a common procedure.
To perform the RCU operations from the RCU Operations tab:
1. Select a CU number or a Port number in the tree.
2. Select one or more RCU or Port in the list. For registering RCU operation, RCU does not have to be
selected. For this step, the list can be blank.
3. Right-click the list to display the pop-up menu.
a. When the MCU&RCU button is selected in the Display box, the pop-up menu consists of the
following:
• RCU Status: Displays the RCU status (see ”Viewing RCU Status (RCU Status)” on page 78).
• RCU Operation: Performs the following RCU operations: Add RCU (Fibre or Serial) (see
”Registering an RCU (Add RCU)” on page 81), Change RCU Option (see ”Registering an RCU
(Add RCU)” on page 81 and ”Modifying RCU Options (Change RCU Option)” on page 86),
and Delete RCU (see ”Deleting an RCU (Delete RCU)” on page 91).
• Edit SSID(s) & Path(s): Performs the following path settings operations: Add Path and Delete Path
(see ”Adding and Deleting Logical Paths for an RCU (Add Path and Delete Path)” on page 91).
Also performs the following SSID setting operations: Add SSID and Delete SSID (see ”Adding
and Deleting SSIDs for an RCU (Add SSID and Delete SSID)” on page 94).
When the list is blank, only the RCU Operation command can be activated.
b. When the Port button is selected at the Display box, the pop-up menu consists of Initiator, RCU
Target, Target, Omit, and Cancel All.
4. Select a command. If two or more RCUs are selected in step 2, only the RCU Operation command can
be selected.
There is no separate window for the port change operation. Select the port type and return to the
Volume list (go to step 6).
5. Click Set. The window closes and the MCU/RCU list changes to the RCU Settings Parameter list. Only
the RCUs selected in step 2 are listed and items in the list depend on the selected command.
NOTE: The options can be modified and/or canceled after you have set them. See ”Modifying
Parameters and Omitting Selected Settings” on page 95.
6. Click Apply on the TrueCopy main window.
The following sections describe in detail for each command and operation.
Configuring the Host Interface Ports
You can use TC390 to change the configuration of the disk array host interface ports as needed to
accommodate the host and TC390 communications paths.
The disk array Fibre Channel interface ports can be configured as target ports (default), initiator ports, or
RCU target ports.
• Target: The Fibre Channel ports that will be connected to the host must be configured as target ports
(default). Target mode is used for host processor channel interface.
• Initiator: The Fibre Channel ports that will be used for TC390 communications to the RCUs must be
configured as initiator ports. Initiator mode emulates a host channel to enable the MCU to send write
I/O operations directly to the RCU target port. Two or more initiator ports must be configured before
you can add the RCUs and create the TC390 pairs.