Adding remote connection

You configure the storage systems for TrueCopy by adding a remote connection from the primary to the secondary system. Adding the connection and setting up remote paths prepares the systems for TC commands and operations.

Prerequisite information

• This procedure is performed on the primary system.

• The data path must be set up. See the section on data path requirements and configurations in the Hitachi TrueCopy® User Guide.

• The secondary system serial number, LDKC, controller ID, path group ID, and port numbers are required.

• One of the fields, Round Trip Time, is covered extensively in the planning section on round trip time in the Hitachi TrueCopy® User Guide.

• Another field, Minimum Number of Paths, is also covered in more detail in the planning section on minimum number of remote paths in the Hitachi TrueCopy® User Guide.

• Remote path settings are required to perform TC pair operations and check pair status in Device Manager - Storage Navigator. Make sure to complete the procedure. If you cancel remote path settings, you will be unable to perform operations and check status.

Also, operations involving remote paths cannot be performed when changing the firmware. Make sure a firmware change completes before beginning operations involving remote paths.

• With Hitachi Virtual Storage Platform G200, G400, G600, when using virtual storage machine volumes, make sure to specify the Hitachi Virtual Storage Platform G200, G400, G600's physical serial number. A virtual storage machine's serial number cannot be specified.

To configure systems and define remote paths

1. In Hitachi Command Suite:

1. On the Resources tab, expand the Storage Systems tree, right-click the target storage system and click Remote Connections.

In Device Manager - Storage Navigator

1. Click Storage Systems, and then expand the Storage Systems tree.

2. In the Storage Systems tree, click Replication > Remote Connections.

2. In the Remote Connections window, click Connections (To) tab.

3. In the Connections (To) tab, click Add Remote Connection.

4. In the Remote Storage System box, specify the following:

1. For Model, select the storage system model and number.

2. For Serial Number, enter one of the following secondary system serial numbers.

- Hitachi Virtual Storage Platform G200, G400, G600: 1 to 99999 (5 digits)

- VSP or USP V/VM: 1 to 99999 (5 digits)

- HUS VM: 200001 to 265535 (6 digits)

 With Hitachi Virtual Storage Platform G200, G400, G600 when using virtual storage machine volumes, make sure to specify the Hitachi Virtual Storage Platform G200, G400, G600's physical serial number. A virtual storage machine's serial number cannot be specified.

5. In the Remote Paths box, specify the following:

1. For Path Group ID, select the path group ID (00-FF). A storage system can have a maximum of 64 registered path group IDs.

2. For Minimum Number of Paths, select the minimum number of paths between the secondary and primary system. If the number of paths drops below the minimum, the primary system splits the pair.

The maximum is 8; the default is 1.

3. In the path ports boxes, select the ports used by the remote path.

You can add more remote paths by clicking the Add Path button. See Configuring additional remote paths for more information.

6. Click Options to access additional settings, which are optional.

1. For RIO MIH Time, enter an interval in seconds that, if exceeded, causes the data-transfer operation to be reported as failed by the system. Values range from 10 seconds to 100 seconds; 15 is the default. RIO MIH means "remote I/O missing interrupt handler".

2. For Round Trip Time, enter a time limit for data copy from P-VOL to S-VOL. Range is 1-500 milliseconds.

7. Click Finish.

8. In the Confirm window, review the settings and enter a task name in the Task Name box.

9. Click Apply to save your settings in the system.

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