Moving workloads when migrating data between storage units

Moving workloads when migrating data between storage units requires the use of Global Copy or IBM^® System Storage™ Metro Mirror. Perform this process to move workloads between storage units.

1. Establish paths between all Site A LSSs and the Site B LSSs.
2. Establish all necessary volume pairs between the Site A storage units and the Site B storage units. You can use either Global Copy or IBM System Storage Metro Mirror.

   If you use Global Copy, convert the pairs to IBM System Storage Metro Mirror after the bulk copy is complete.

3. Ensure that all remote mirror and copy volumes are in duplex state.
4. Quiesce all of the applications.
5. End all remote mirror and copy pairs across all ESSs.
6. End all remote mirror and copy paths.
7. Establish remote mirror and copy paths from the Site B storage units to the Site A storage units.
8. Establish all IBM System Storage Metro Mirror pairs from the Site B storage units to the Site A storage units.
9. Suspend all remote mirror and copy pairs. This causes the storage units to maintain a changed-track bitmap for all suspended remote mirror and copy primary volumes.
10. Resume all the Site A applications. The Site A applications use the Site B storage units disks.
11. Resume all the Site A applications that use the Site A storage units disks.