Hitachi Universal Replicator step-by-step Configuration

Abid

5 min readAug 30, 2019

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