Creating a Metro Mirror volume pair between a 1750 and a 2105

Complete this task to create a Metro Mirror volume pair using volumes from a 1750 and a 2105.

Before you begin, ensure that you meet the following requirements:

The license for the remote mirror and copy feature must be activated.
To create a Metro Mirror volume pair between machine types 1750 and a 2105, you must have added the Add 2105 Copy Services Domain option from the Select Action drop-down list when you configured your storage complex environment.
Ensure that paths are set up between the source and the target LSSs for the Metro Mirror volume pairs. The paths between the 2105 and the 1750 must be configured using Fibre Channel Protocol (FCP) ports.
The storage type of the source and target volumes on the 1750 and 2105 domain must have the same type. That is, if the source volumes are fixed block volumes, the target volumes must also be fixed block volumes.
The size of the volumes in the source LSS must be less than or equal to those of the target LSS.

You can create Metro Mirror relationships using source and target volumes from the following machine types:

A 2107 and a 2107
A 1750 and a 1750
A 2107 and a 1750
A 2105 and a 1750
A 2105 and a 2107

Note: If the source is a Copy Services 2105 domain, the Metro Mirror task is performed on the source domain. However, if you perform a "Suspend at target" action, the suspension occurs at the target domain.

Perform the following steps to create a Metro Mirror pair between a 1750 and a 2105. For this task, the source domain is a 2105 Model 800 or 750 and the target is a 1750 .

In the navigation, select Real-time Manager > Copy Services > Metro Mirror.
Select the 2105 Copy Services domain from the list of storage complexes. This option is enabled if you included a Copy Services domain for the 2105 when you selected Storage Complex from the Select Action drop-down list under Manage Hardware. All storage complexes that you added when you configured your environment are included in the drop-down list.
Select a storage unit that you will be working with from the Storage unit drop-down menu.
Select a resource type from the Resource type drop-down menu.
Select which resource to view from the Specify (LSS, Volume Group, Host attachment, Storage type) drop-down menu.
Click on Select Action drop-down menu and select Create... and click Go.
On the Volume pairing method page, specify one of the following methods by which to select volume pairs and then click Next.
1. If you click the Automated volume pair assignment, the first selected source volume is paired automatically with the first selected target volume.
2. If you click Manual volume pair assignment, you must select each specific target volume for each selected source volume.
On the Select source volumes page, select the volumes that you want to include for the Metro Mirror relationships and click Next. If the resource type is an LSS, specify which from LSS to select source volumes. Optionally, you can click the Create paths button to create a new path. You are linked to the page where you can create a path.
On the Select target volumes page, select target volumes by changing the storage complex to the name that is associated with the 1750 domain, and click Next. Consider the following guidelines:
1. If you selected the automated pairing method, each source volume that you selected is paired with a target volume.
2. If you selected the manual pairing method, you can select target volumes from different LSSs on the target storage unit. This page repeats for each of the source volumes that you selected.
On the Select copy options page, select the type of relationship and the copy options for the relationship and click Next. The Enable critical volume mode and Create relationship even if target is online to host options are available for count-key-data volumes only.
1. Select the Perform initial copy option the first time a that volume pair is created because it is needed to ensure that the entire source volume is copied to the target volume to guarantee that the source and target volumes contain the same data.
2. Optionally, you can select the Suspend Metro Mirror relationship after initial copy option because it only applies to Metro Mirror volume pairs. This means that after data is completely copied to the target volume of the volume pair, the target volume goes into the suspended state.
On the Verification page, review the attributes and values to verify that they are correct.
If the attributes and values are not correct, click Back to return and specify the correct values. Otherwise, click Finish to complete the process.