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# Create Open Replicator copy sessions

Open Replicator is a non-disruptive migration and data mobility application.

## Prerequisites

The following session options cannot be used:

- Push
- Differential
- Precopy

There are many rules and limitations for running Open Replicator sessions. See the Solutions Enabler Migration CLI Product Guide before creating a session. For a quick reference, see Open Replicator session options.

See Roles and associated permissions to determine the user roles that can perform this task.

## Steps

1. Select the storage system.
2. Select Data Protection > Open Replicator > Open Replicator SAN View.
3. Filter the items that are displayed in the Filtered LUNs panel by selecting items within the Control Ports, Remote Ports, and Remote Volumes panels.
4. Select one or more volumes within the Filtered LUNs panel and click Create Copy Session.
5. Click Create Copy Session.
6. Select a Copy Direction and Copy Operation.
7. Click Next.

   The Source - Remote Volumes lists the remote volumes from the Open Replicator remote volumes list view. The Target - Control Volumes lists all the control volumes that can be paired with the remote volumes.

   For a cold push session, one control volume can concurrently push data to up to 16 remote volumes. For cold pull, hot push, and hot pull sessions only one control volume can push or pull to one remote device.

8. Select a remote volume and target volume, and then click Add Pair.
   If the pair is valid, it is added to the Volume Pairs list.
9. Click Remove Pair to edit the Volume Pairs list.
10. Click Next.
11. Enter Session Name.
12. Enter Copy Pace value (0 - slowest to 9 - fastest).

    With offline copying, there is a slight pause between each track write. You can speed up a copy operation by reducing or eliminating this pause. While in the CopyInProgress or CopyOnAccess state, set a pace value higher than the default of 5. Setting the copy pace to 9 eliminates this pause.

    This feature is not supported when the ORS control volume is on a storage system running HYPERMAX OS 5977.

13. Select the Open Replicator session options and click Next.
14. View session Summary and click Finish to create session or click Back to edit session options.