Defining a path that has the consistency option enabled

Complete this task to define a path that has the consistency group option enabled for the volume pairs that are associated with the LSS volume pair.

Ensure that the Remote Mirror and Copy license key is installed and enabled to allow the operations to be performed.

A consistency group is a group of volumes that provides the ability to temporarily queue (at the host’s level) subsequent write operations to all consistency group volumes on a single LSS pairing when an error occurs to one of the volumes in the group (source or target), or when a total link failure is detected between the source and target LSS volume pair.

This process describes how to define paths that have the consistency group option enabled. This means that when an error occurs on any volume pairs or on the links that are associated with these LSS pairs, an alert is issued and I/O to all duplex remote mirror and copy volumes on LSS pairs will be queued either until a consistency group created operation is run or the consistency group timeout time expires, allowing external automation to use the consistency group created operation to create a dependent write consistent set of target volumes over any number of LSS and disk storage units.

Perform the following steps to defining a path that has the consistency option enabled:

In the navigation, select Real-time Manager > Copy Services > Paths.
In the Paths — Main Page, select Create from the Select Action drop-down box. Then, click Go. The Create Path — Create source LSS page displays.
Select the source LSS. To remove any existing paths from this source LSS, use the Delete page.
Click Next.
In the Create Paths — Select target LSS page, select the target LSS. Click Next
In the Create Paths — Select source I/O ports page, select the source I/O ports for the storage unit . Click Next.
In the Create Paths — Select target I/O ports page, select the target I/O ports for each source port. Click Next.
In the Create Paths — Select path options, select the Define as a consistency group option. Click Next.
In Create Paths — Verification, review the attributes and values that you selected to verify that they are correct.
If the attributes and values are not correct, click Back as appropriate to return and then specify the correct values. Otherwise, click Finish to complete the consistency group process.