Migrating data using Global Copy or Metro Mirror

Migrating data between storage units requires the use of the Global Copy or Metro Mirror function.

Note: Follow the steps that are outlined in this process whether you are migrating data from an ESS to a DS6000™ storage unit or between two storage units. You must install DS CLI on your server to allow the DS6000 storage unit to communicate with the ESS. More than likely, you will also need to write new scripts.
  1. Establish paths between all Site A LSSs and Site B LSSs.
  2. Establish all necessary volume pairs between the storage unit A and the storage unit B. You can use either the Global Copy or the Metro Mirror function.
  3. Convert the volume pairs to Metro Mirror after the bulk copy is complete if you use Global Copy.
  4. Ensure that all remote mirror and copy volumes are in duplex state.
  5. Quiesce the applications before you switch to the new volumes.
  6. End all remote mirror and copy pairs across all storage units.
  7. End all the remote mirror and copy paths from storage unit A to storage unit B.
  8. Resume all applications that point to devices at the storage unit B site.
Parent topic: Data migration
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