Adding a remote connection
Add a remote connection to register a storage system of a secondary site to the storage system of a primary site. Also, add a remote connection from the storage system of a secondary site to the storage system of a primary site. When a remote connection is added, both storage systems are ready to perform operations on GAD. You can also set a remote path between storage systems when the remote connection is added.
- Remote path operations cannot be performed during microcode/firmware exchange processing. Before performing remote path operations, make sure that microcode/firmware exchange processing is complete.
- Remote path operations cannot be performed when microcode/firmware exchange processing has been interrupted (for example, due to user cancellation or error). Before performing remote path operations, make sure that microcode/firmware exchange processing has completed normally.
Before you begin
- Storage Administrator (Remote Copy) role is required.
- Physical paths are set.
- : The port attributes of local and remote storage systems are defined for GAD.
- You know the remote storage system model, serial number, and path group ID.
Procedure
In the Storage Systems tree, select Replication, and then Remote Connections.
Select the Connections (To) tab.
Click Add Remote Connection to open the Add Remote Connection window.
In Connection Type, select System.
Set each items in Remote Storage System.
- Model: Select the remote storage system model.
- Serial Number: Enter the serial number for the remote storage system.
Specify the serial number for the storage system when using a volume in a virtual storage machine. Do not specify the serial number for the virtual storage machine.
Set the items in Remote Paths.
- Path Group ID: Select the ID for the path group.
- Minimum Number of Paths: Specify the minimum number or paths that are required for each remote storage systems that are connected to the current local storage system. When the number of normal paths become fewer than the value specified in Minimum Number of Paths, the local storage system suspends all GAD pairs that will be affected, and prevents the server performance from being harmed due to insufficient number of paths.
- For Select Type, select the port type. Then select the port to be used for both the local storage system and the remote storage system. If you select iSCSI, enter the IP address and the TCP port number for the remote storage system port. To add more paths, click Add Path. You can also add and delete paths later as needed using the Add Remote Paths window.
- : Select the port to be used for both the local storage system and the remote storage system. To add more paths, click Add Path. You can also add and delete paths later as needed using the Add Remote Paths window.
Enter the RIO MIH Time, if necessary.
You can enter a value between 10 and 100. The default setting is 15.
The RIO MIH (Remote I/O Missing Interrupt Handler) is the wait time until completion of data copy between storage systems.
Enter Round Trip Time in milliseconds, if necessary.
The round trip time is a time limit for data to travel from the P-VOL to the S-VOL. This value is the reference value to control the copy pace of the initial copy automatically when the initial copy is performed, and to lessen the impact to the response time of the remote I/O for the update I/O.
For details on the round trip time, see Determining the Round Trip Time.
Click Finish.
In the Confirm window, check the settings you made, and then enter the task name in Task Name.
Click Apply.
The task is registered. The Tasks window appears if the Go to tasks window for status check box is selected.