HP StorageWorks XP Remote Web Console Software - Manual (Page 87)

Hitachi TrueCopy for z/OS user guide 87
• Last Updated: The date and time when the RCU is last updated.
• SCP Time: State-Change-Pending (SCP) time.
• FREEZE Option: Support for the CGROUP (FREEZE/ RUN) PPRC TSO command.
• The Refresh button refreshes the information displayed on the window. The Close button closes the
window.
The Path Status box lists the path status and the following table describes each status. For troubleshooting
information about MCU-RCU paths, see ” General TrueCopy troubleshooting ” on page 151.
Registering an RCU (Add RCU)
You can register up to four RCUs to each MCU, and establish up to eight paths to each RCU. You must
register each CU image as a separate RCU. The logical paths are established for the CU images of the
MCU and RCU separately. The maximum number of logical paths for each MCU is 32 (8 paths per RCU 
4 RCUs per MCU).
The remote copy connections and MCU ports must be properly installed and configured before you can
register an RCU. When you register an RCU, the current CU image of the MCU registers the specified CU
image as a TC390 RCU and establishes the specified number of logical paths to the RCU. After you have
registered an RCU (and path status is normal), you can create TC390 pairs that have R-VOLs in the newly
registered RCU.
Use the Add RCU window to register the RCU(s) to the current CU image of the connected MCU. When the
Add RCU command for each channel type is selected, the Add RCU window is displayed and you can set
the RCU(s) to be registered.
Table 20 Logical path status
Status Description Condition
Normal This logical path has been successfully established and can be used for TC390 remote
copy activities.
Initialization Failed The link initialization procedure with the RCU has failed because either the physical path
connection between the MCU and the RCU or the connection between the MCU and the
host was missing.
Communication Timeout A timeout error has occurred between the MCU and RCU.
Resource Shortage The establish logical path link function has been rejected by the RCU. All logical path
resources in the RCU might be used for other connections.
Serial Number
Mismatch
The serial number of the control unit that is connected to this logical path does not match
the serial number specified by the Add RCU window.
Invalid Port The serial interface port specified is not in the RCP or Initiator mode.
RCU Port Number
Mismatch
There are three possible factors as follows:
• The specified port in the RCU is physically disconnected from the MCU.
• The port is not configured as an RCU target port.
• The specified port number is not available.
RCU Port Type
Mismatch
The microcode at the RCU side does not support the Fibre remote copy function. Or the
specified port type is not RCU Target.
Communication Failed A timeout error has occurred on the Fibre path between MCU and RCU.