HP XP Continuous Access Software - Manual (Page 56)

56 Continuous Access XP for the XP1024/XP128
• Minimum Paths: Minimum number of paths required for selected RCU connected to the MCU.
• Maximum Initial Copy Activity: Number of concurrent initial copy operations.
• RIO MIH Time: Time value for the remote I/O (RIO) missing interrupt handler (MIH), which is the wait
time until data transfer from the MCU to RCU is complete.
• Path Blockade Watch: Time for monitoring blockade in the Fibre Channel paths on the MCU side.
• RCU Registered: Date and time the RCU was registered.
• Last Updated: Date and time the RCU was last updated.
• Refresh button: Refreshes information displayed on the pane.
• Close button: Closes the pane.
The Path Status field lists the path status. Table 16 describes each status. For troubleshooting information
about MCU-RCU paths, see the Troubleshooting chapter of the HP StorageWorks Command View XP user
guide for XP Disk Arrays or the HP StorageWorks XP Remote Web Console user guide for
XP1024/XP128.
Registering RCUs (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. Logical paths are established for CU images of the MCU and
RCU separately. Maximum number of logical paths for each MCU is 32 (8 paths per RCU × 4 RCUs per
MCU). Remote copy connections and MCU ports must be properly installed and configured before you
can register an RCU. When registering an RCU, the current CU image of the MCU registers the specified
CU image as a Continuous Access XP RCU and establishes the specified number of logical paths to the
RCU. After registering an RCU (and path status is normal), create Continuous Access XP pairs with S-VOLs
in the newly registered RCU.
Use the Add RCU pane to register RCUs to the current CU image of the connected MCU. When you select
Add RCU, the Add RCU pane appears.
Table 16 Logical path status
Status Description Condition
Normal Logical path was successfully established and can be used for Continuous Access XP
copy activities.
Initialization Failed Link initialization procedure with the RCU failed because the physical path connection
between the MCU and the RCU or the connection between the MCU and the host was
missing.
Communication
Timeout
Timeout error occurred between the MCU and RCU.
Resource Shortage Establish logical path link function was rejected by the RCU. All logical path resources
in the RCU might be used for other connections.
Serial Number
Mismatch
Serial number of the control unit connected to this logical path does not match serial
number specified by the Add RCU pane.
Invalid Port Serial interface port specified is not in the RCP or Initiator mode.
RCU Port Number
Mismatch
The following are possible factors:
• Specified port in the RCU is physically disconnected from the MCU.
• Port is not configured as an RCU target port.
• Specified port number is not available.
RCU Port Type
Mismatch
Microprogram at the RCU side does not support the fibre remote copy function or
specified port type is not RCU Target.
Communication Failed Timeout error occurred on the path between the MCU and RCU.