Hitachi Universal Replicator step-by-step Configuration

Step 1: Configure Port Attributes:

  • Set port topology for “Initiator” and “RCU Target ports” according to type of connection between the primary and secondary subsystems.
    • Direct connect: Fabric Off, FC-AL
    • Switch connect: Fabric On, Point-to-Point
    • Extender connect: Fabric On, Point-to-Point
  • Go to HUR control panel and select DKC Operation tab.
  • Select the [Port] radio button to set Initiator and RCU target ports. Both the MCU and RCU need at least one Initiator and one RCU Target port.
  • In [DKC Operation] tab, and select the [Port] radio button in the [Display] group box. The tree along the left-hand side displays channel adapters and port attributes for the local subsystem.

  • Choose the port you want to configure. Few ways to do this:
    • Select the channel adapter you want to work with. The panel on the right will list all the ports associated with that channel adapter. (or)
    • Select a port attribute (RCU target or initiator) from the tree.
  • Click on a Fibre Channel port from the list of ports to select that port.
  • Right-click the selected port and choose a port attribute (RCU target or initiator) from the pop-up menu. You will see “Modified” in the right-most column of the port list, and the Preset list will display any changes that you have made.

  • Before you click “Apply” to save your changes, be sure you double-check your settings in the “preset” panel.

Step 2: Connect MCU and RCU

  • If you haven’t done so already, physically connect the MCU Initiators to the RCU targets and RCU Initiators to MCU targets.
  • Establish logical paths between MCU and RCU. Note: Up to 8 logical paths can be configured per connected subsystem.

  • In the [DKC Operation] tab, select the [DKC] radio button.
  • Right click in the grid area on the right of the window. Select “DKC Operation”; then “Add DKC.”
  • Set these attributes:
    • Serial number of the connected subsystem.
    • Controller ID: This should be 4 for TagmaStore USP. This number corresponds to the generation of the connected subsystem. 1 = 7700E, 2 = 9900, 3 = 9900V, but HUR doesn’t run on these systems so don’t worry about them.
    • Path group ID: For now, you cannot change this value.
    • In the [M-R Path] box, specify port relationships between the MCU and RCU. “Port” refers to the initiator port on the local subsystem. “Pair-Port” specifies the associated RCU Target port on the remote subsystem.
    • Click “Option” to save your changes

  • Now you’ll see the “DKC Option” form. You can set two attributes here:
    • Minimum paths (typically set to 1)
    • RIO MIH Time (sec): This is the wait time until data transfer from the local subsystem to the remote subsystem is complete. This parameter has a range of 10 to 100 seconds, with a default value of 15. “RIO MIH” is an acronym for “remote I/O missing interrupt handler.”
  • If all of the physical connectivity and zoning are configured correctly, you should see a status of “Normal” for your path(s) on the [DKC Operation] Tab.

Step 3: Register volumes in Journal Groups

  • From the HUR control panel in Storage Navigator, select the [Journal Operation] tab.
  • You’ll see “Registered” and “Free” in the tree on the left-hand side of the panel.
    • If you want to register volumes to an empty journal group, select the journal group from [Free].
    • If you want to register new volumes to a journal group with some volumes already registered, select the journal group from [Registered].
    • If you want to see all the journal groups for this subsystem, select the root of the tree, [Journal Groups].
  • Right click the journal group and select “Edit JNL Volumes.”

The “Edit JNL Volumes” form appears:

  • Select the volumes you want to register from the list box on the bottom of the form and click “Add.” Use the “PG/CU change” area to filter the list based on either parity group or control unit.
  • Click “Add.” If all went well, you’ll see these journal volumes in the list at the top of the form with “Add” in the “Operation” column.
  • When you’re done adding journal volumes, click “Set,” which will close the “Edit JNL Volumes” form.
  • Back on the “Journal Operations” tab, double check your journal volumes in the “Preset” area.
  • Click “Apply” to register the volumes into the volume group.
  • Double-check that all went well but looking for your journal volumes under the “Registered” entry in the “Journal Groups” tree on the left side of the panel.

Step 4: Create Pairs

  • From the HUR control panel in Storage Navigator, select the [Pair Operation] tab.
  • Select either “Subsystem” or a port from the tree on the left. If you select a port, you’ll filter your view to just those volumes presented on that port.
  • In the list of LUNs on the right side of the panel, select and right click the volumes that you want to use as PVOLs

  • Choose “Paircreate” from the pop-up menu.
  • Specify attributes for the pair:
    • SVOL
    • M-JNL (journal group on the primary subsystem)
    • R-JNL (journal group on the secondary subsystem)
    • Mirror ID: This will be used for three data center configurations. If this is a 1:1 replication, leave it as “0.”
    • Specify a CT group number
    • Remote DKC
    • Initial copy type
    • Priority
    • JNL control
    • Click “Set,” which closes the “Paircreate” form.
    • Click “Apply” to create the pair(s).


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